Properties of the Number 56686

Fifty-Six Thousand Six Hundred Eighty-Six

Basics

Value: 56685 → 56686 → 56687

Parity: even

Prime: No

Previous Prime: 56681

Next Prime: 56687

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 2 × 7 × 4049

Divisors: 1, 2, 7, 14, 4049, 8098, 28343, 56686

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1101110101101110

Octal: 156556

Duodecimal: 2897A

Hexadecimal: dd6e

Square: 3213302596

Square Root: 238.08821894415524

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

Numbers k such that 50·R_k + 7 is prime, where R_k = 11...1 is the repunit (A002275) of length k. A56686

Number of (n+2)X(3+2) 0..1 arrays with no 3x3 subblock diagonal sum 0 or 1 and no antidiagonal sum 0 or 1 and no row sum 0 and no column sum 0. A254973