Properties of the Number 63665

Sixty-Three Thousand Six Hundred Sixty-Five

Basics

Value: 63664 → 63665 → 63666

Parity: odd

Prime: No

Previous Prime: 63659

Next Prime: 63667

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 5 × 7 × 17 × 107

Divisors: 1, 5, 7, 17, 35, 85, 107, 119, 535, 595

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1111100010110001

Octal: 174261

Duodecimal: 30A15

Hexadecimal: f8b1

Square: 4053232225

Square Root: 252.31924223094836

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

Ruth-Aaron numbers (1): sum of prime divisors of n = sum of prime divisors of n+1. A6145

Decimal part of a(n)^1/3 starts with reversal of its integer part: first term of runs. A34309

Numbers k such that sopfr(k) = sopf(k+1), where sopf(k) = A008472(k) and sopfr(k) = A001414(k). A64675

Least k such that k·6ⁿ-1 , k·6ⁿ+1, and 2·k*6ⁿ-1 are prime; that is, twin primes and a Sophie Germain prime. A212481

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 531", based on the 5-celled von Neumann neighborhood. A272752

Number of ways 1/n can be written as 1/x² + 1/y² with y >= x >= 1. A63665