Properties of the Number 81636

Eighty-One Thousand Six Hundred Thirty-Six

Basics

Value: 81635 → 81636 → 81637

Parity: even

Prime: No

Previous Prime: 81629

Next Prime: 81637

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 ² × 3 × 6803

Divisors: 1, 2, 3, 4, 6, 12, 6803, 13606, 20409, 27212

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011111011100100

Octal: 237344

Duodecimal: 3B2B0

Hexadecimal: 13ee4

Square: 6664436496

Square Root: 285.7201427971084

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

Number of length n arrays of permutations of 0..n-1 with each element moved by -3 to 3 places and with no two consecutive decreases. A263678

Number of nX6 0..1 arrays with every element equal to 0, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero. A298780

Class 8+ primes. A81636

T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero. A298782