Properties of the Number 87686

Eighty-Seven Thousand Six Hundred Eighty-Six

Basics

Value: 87685 → 87686 → 87687

Parity: even

Prime: No

Previous Prime: 87683

Next Prime: 87691

Digit Sum: 35

Digital Root: 8

Palindrome: No

Factorization: 2 × 17 × 2579

Divisors: 1, 2, 17, 34, 2579, 5158, 43843, 87686

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101011010000110

Octal: 253206

Duodecimal: 428B2

Hexadecimal: 15686

Square: 7688834596

Square Root: 296.1182196353342

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 (n+1) X (k+1) 0..5 arrays with every 2 X 2 subblock summing to 10. A183662

a(n) = a(n-1) + a(n-2) + 3·a(n-3) with a(0) = 1, a(1) = 2, a(2) = 5. A247594

Number of (n+1) X 2 0..5 arrays with every 2 X 2 subblock summing to 10. A183654

Number of (n+1) X 6 0..5 arrays with every 2 X 2 subblock summing to 10. A183658

a(n) = ∑_i=1..n prime(n*(i - 1) + i). A319012

Elements of A004001 that repeat consecutively. A87686