66855 (number)
66,855 (sixtysix thousand eight hundred fiftyfive) is an odd fivedigits composite number following 66854 and preceding 66856. In scientific notation, it is written as 6.6855 × 10^{4}. The sum of its digits is 30. It has a total of 3 prime factors and 8 positive divisors. There are 35,648 positive integers (up to 66855) that are relatively prime to 66855.
Basic properties
 Is Prime? No
 Number parity Odd
 Number length 5
 Sum of Digits 30
 Digital Root 3
Name
Short name  66 thousand 855 

Full name  sixtysix thousand eight hundred fiftyfive 
Notation
Scientific notation  6.6855 × 10^{4} 

Engineering notation  66.855 × 10^{3} 
Prime Factorization of 66855
Prime Factorization 3 × 5 × 4457
Composite numberω(n)  Distinct Factors  3  Total number of distinct prime factors 

Ω(n)  Total Factors  3  Total number of prime factors 
rad(n)  Radical  66855  Product of the distinct prime numbers 
λ(n)  Liouville Lambda  1  Returns the parity of Ω(n), such that λ(n) = (1)^{Ω(n)} 
μ(n)  Mobius Mu  1  Returns:

Λ(n)  Mangoldt function  0  Returns log(p) if n is a power p^{k} of any prime p (for any k >= 1), else returns 0 
The prime factorization of 66,855 is 3 × 5 × 4457. Since it has a total of 3 prime factors, 66,855 is a composite number.
Divisors of 66855
8 divisors
τ(n)  Total Divisors  8  Total number of the positive divisors of n 

σ(n)  Sum of Divisors  106992  Sum of all the positive divisors of n 
s(n)  Aliquot Sum  40137  Sum of the proper positive divisors of n 
A(n)  Arithmetic Mean  13374  Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n)) 
G(n)  Geometric Mean  258.56333846855  Returns the nth root of the product of n divisors 
H(n)  Harmonic Mean  4.9988784208165  Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors 
The number 66,855 can be divided by 8 positive divisors (out of which 0 are even, and 8 are odd). The sum of these divisors (counting 66,855) is 106,992, the average is 13,374.
Other Arithmetic Functions (n = 66855)
φ(n)  Euler Totient  35648  Total number of positive integers not greater than n that are coprime to n 

λ(n)  Carmichael Lambda  4456  Smallest positive number such that a^{λ(n)} ≡ 1 (mod n) for all a coprime to n 
π(n)  Prime Pi  ≈ 6661  Total number of primes less than or equal to n 
r_{2}(n)  Sum of 2 squares  0  The number of ways n can be represented as the sum of 2 squares 
There are 35,648 positive integers (less than 66,855) that are coprime with 66,855. And there are approximately 6,661 prime numbers less than or equal to 66,855.
Divisibility of 66855
m  2  3  4  5  6  7  8  9 

n mod m  1  0  3  0  3  5  7  3 
The number 66,855 is divisible by 3 and 5.
Classification of 66855
By Arithmetic functions
 Arithmetic
 Deficient
Expressible via specific sums
 Polite
By Powers
 Square Free
Other numbers
 LucasCarmichael
 Sphenic
Base conversion (66855)
Base  System  Value 

2  Binary  10000010100100111 
3  Ternary  10101201010 
4  Quaternary  100110213 
5  Quinary  4114410 
6  Senary  1233303 
8  Octal  202447 
10  Decimal  66855 
12  Duodecimal  32833 
16  Hexadecimal  10527 
20  Vigesimal  872f 
36  Base36  1fl3 
Basic calculations (n = 66855)
Multiplication
n×yn×2  133710 

n×3  200565 
n×4  267420 
n×5  334275 
Division
n÷yn÷2  33427.500 

n÷3  22285.000 
n÷4  16713.750 
n÷5  13371.000 
Exponentiation
n^{y}n^{2}  4469591025 

n^{3}  298814507976375 
n^{4}  19977243930760550625 
n^{5}  1335578642990996612034375 
Nth Root
^{y}√n^{2}√n  258.56333846855 

^{3}√n  40.586160117287 
^{4}√n  16.079904802845 
^{5}√n  9.2262831472783 
66855 as geometric shapes
Circle
Radius = nDiameter  133710 

Circumference  420062.35371149 
Area  14041634328.691 
Sphere
Radius = nVolume  1.2516712840595E+15 

Surface area  56166537314.763 
Circumference  420062.35371149 
Square
Length = nPerimeter  267420 

Area  4469591025 
Diagonal  94547.247712453 
Cube
Length = nSurface area  26817546150 

Volume  298814507976375 
Space diagonal  115796.25674002 
Equilateral Triangle
Length = nPerimeter  200565 

Area  1935389686.0885 
Altitude  57898.128370009 
Triangular Pyramid
Length = nSurface area  7741558744.3539 

Volume  35215627484503 
Height  54586.878917923 
Cryptographic Hash Functions
md5  76c10c1aeb1714211f835617dd3ba70e 

sha1  0ae00f4688b64a8fae00b0a8c990bba431ea3e82 
sha256  f1e1d0777f6f699f20b107c2071bb71a7bf2e8d19405651a4a9b00ad73eafa65 
sha512  663cbbded9c7ff33a1780a57778cc6bad5ff0215088509e2cf7c34ad6562fd5453f1e974c3fad5d769000bca1512477d3491afa5e01cad25da02ababf05abf89 
ripemd160  a86a3f7f2a07efb885a7946080b92723c6f9d5bd 