Properties of the Number 68729

Sixty-Eight Thousand Seven Hundred Twenty-Nine

Basics

Value: 68728 → 68729 → 68730

Parity: odd

Prime: Yes

Previous Prime: 68713

Next Prime: 68737

Digit Sum: 32

Digital Root: 5

Palindrome: No

Factorization: 68729

Divisors: 1, 68729

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10000110001111001

Octal: 206171

Duodecimal: 33935

Hexadecimal: 10c79

Square: 4723675441

Square Root: 262.16216355530787

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

a(1)=3, b(n) = ∏_k=1..n a(k), a(n+1) is the largest prime factor of (b(n)-1). A5266

a(1) = 2, a(2) = 3; for n >= 2, a(n+1) is largest prime factor of (∏_k=1..n a(k)) - 1. A84599

a(n) = floor(exp(8/15)*n!). A30911

Number of nX9 binary arrays with each 1 adjacent to exactly one 0 vertically and one 0 horizontally. A183351

Number of solenoidal flows (flow in = flow out) in an n X n square array with integer velocities in -4 .. 4. A68729