Properties of the Number 68913

Sixty-Eight Thousand Nine Hundred Thirteen

Basics

Value: 68912 → 68913 → 68914

Parity: odd

Prime: No

Previous Prime: 68909

Next Prime: 68917

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 13 × 19 × 31

Divisors: 1, 3, 9, 13, 19, 31, 39, 57, 93, 117

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000110100110001

Octal: 206461

Duodecimal: 33A69

Hexadecimal: 10d31

Square: 4749001569

Square Root: 262.51285682800375

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

Differences between two positive cubes in exactly 2 ways. A14440

Difference between two positive cubes in more than one way. A34179

Sum of two (possibly negative) coprime cubes in at least 2 ways, but not the sum of 2 noncoprime cubes. A293648

Sum of two (possibly negative) cubes in at least 3 ways. A51383

Sum of two (possibly negative) cubes in at least 3 ways (primitive solutions). A293650

Sum of two (possibly negative) coprime cubes in at least 3 ways, but not the sum of 2 noncoprime cubes. A293651

Numbers k such that both distances from k to two nearest cubes are perfect cubes. A234348

tan(tan(x)+arcsin(x))=2·x+19/3!*x³+777/5!*x⁵+68913/7!*x⁷... A12951

Wiener index of the n-web graph. A180576

Square array read by antidiagonals of number of k step walks (each step +-1 starting from 0) which are never more than n or less than -n. A68913