Properties of the Number 81613

Eighty-One Thousand Six Hundred Thirteen

Basics

Value: 81612 → 81613 → 81614

Parity: odd

Prime: No

Previous Prime: 81611

Next Prime: 81619

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 7 × 89 × 131

Divisors: 1, 7, 89, 131, 623, 917, 11659, 81613

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011111011001101

Octal: 237315

Duodecimal: 3B291

Hexadecimal: 13ecd

Square: 6660681769

Square Root: 285.67989078687356

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

Nearest integer to log(n)^sqrt(n*log(n)). A62424

Number of (n+2) X (2+2) 0..1 arrays with no 3·3 subblock diagonal sum 0 and no antidiagonal sum 0 and no row sum 2 and no column sum 2. A255222

Length of iteration list when Collatz-function is iterated with initial value n!. A81613