Properties of the Number 69087

Sixty-Nine Thousand Eighty-Seven

Basics

Value: 69086 → 69087 → 69088

Parity: odd

Prime: No

Previous Prime: 69073

Next Prime: 69109

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 3 × 23029

Divisors: 1, 3, 23029, 69087

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000110111011111

Octal: 206737

Duodecimal: 33B93

Hexadecimal: 10ddf

Square: 4773013569

Square Root: 262.84406023343956

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

T(n,k)=Number of nXk 0..1 arrays with every element equal to 2, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero. A299602

Number of nX3 0..1 arrays with every element equal to 2, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero. A299597

a(n-1)*a(n-4) + a(n-2)*a(n-5) + a(n-3)*a(n-6), with a(k<6) = 1. A118330

Numbers m such that (1/m)*∑_k=1..m core(k) > φ(m) where core(n) = A007913(n) is the squarefree part of n: the smallest number such that n·a(n) is a square and φ(n) = A000010(n) is the Euler totient function. A69087