Properties of the Number 68686

Sixty-Eight Thousand Six Hundred Eighty-Six

Basics

Value: 68685 → 68686 → 68687

Parity: even

Prime: No

Previous Prime: 68683

Next Prime: 68687

Digit Sum: 34

Digital Root: 7

Palindrome: Yes

Factorization: 2 × 61 × 563

Divisors: 1, 2, 61, 122, 563, 1126, 34343, 68686

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000110001001110

Octal: 206116

Duodecimal: 338BA

Hexadecimal: 10c4e

Square: 4717766596

Square Root: 262.0801404151028

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 with digits 6 and 8 only. A284635

Numbers n such that σ(2*φ(n)) = 2*σ(n). A137733

Nested palindromes. A344550

Let p = abc..k be a prime in base 10. Define mirror(p) = abc...k...cba. Sequence gives primes of the form mirror(p) for some p. A68686

Number of nX4 0..1 arrays with every element unequal to 0, 1, 2, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero. A317121