Properties of the Number 64917

Sixty-Four Thousand Nine Hundred Seventeen

Basics

Value: 64916 → 64917 → 64918

Parity: odd

Prime: No

Previous Prime: 64901

Next Prime: 64919

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 7213

Divisors: 1, 3, 9, 7213, 21639, 64917

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1111110110010101

Octal: 176625

Duodecimal: 31699

Hexadecimal: fd95

Square: 4214216889

Square Root: 254.78814729103863

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Number of distinct values of ∑_i=0..n x(i)*binomial(n,i), where the x(i) is a vector of length n+1 that runs through all combinations of {0, 1}. A205536

a(n) = k is a number such that A007535(k), the smallest pseudoprime to base k ( > k), is the n-th Carmichael number. A293563

Numbers k such that 441·2^k+1 is prime. A323149

Number of ways to choose a multiset of values whose sum is n from the first floor(1+log₂(n)) rows of Pascal's triangle. A366120

a(1) = 1, a(2) = 2. For n >= 3, a(n) is found by concatenating the fourth powers of the first n-1 terms of the sequence and then dividing the resulting number by a(n-1). A181866

a(n) is the result of beginning with n and iterating k -> A064916(k) until a prime is reached. A64917

Number of (n+2) X (5+2) 0..1 arrays with no 3 X 3 subblock diagonal sum 2 and no antidiagonal sum 2 and no row sum 0 and no column sum 0. A255789

a(n) = 81·n² - 2247·n + 15383. A182255