Properties of the Number 68721

Sixty-Eight Thousand Seven Hundred Twenty-One

Basics

Value: 68720 → 68721 → 68722

Parity: odd

Prime: No

Previous Prime: 68713

Next Prime: 68729

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 22907

Divisors: 1, 3, 22907, 68721

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000110001110001

Octal: 206161

Duodecimal: 33929

Hexadecimal: 10c71

Square: 4722575841

Square Root: 262.14690537940743

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(n) = 1 + ∑_k=0..n-5 a(k) * a(n-k-5). A346074

Number of combinatorially distinct (n-1)-dimensional links in all edgewise triangulations of a simplex. A391051

Arithmetic derivative of cubes: a(n) = 3·n²*A003415(n). A68721