Properties of the Number 87680

Eighty-Seven Thousand Six Hundred Eighty

Basics

Value: 87679 → 87680 → 87681

Parity: even

Prime: No

Previous Prime: 87679

Next Prime: 87683

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 2 ⁷ × 5 × 137

Divisors: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

5184 Try Today's Challenge

Representations

Binary: 10101011010000000

Octal: 253200

Duodecimal: 428A8

Hexadecimal: 15680

Square: 7687782400

Square Root: 296.10808837314795

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..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally, vertically, diagonally or antidiagonally. A232677

Number of (n+1) X (1+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally, vertically, diagonally or antidiagonally. A232670

Number of (n+1)X(5+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally, vertically, diagonally or antidiagonally. A232674

Number of length n+3 0..7 arrays with every four consecutive terms having the sum of some three elements equal to three times the fourth. A248536

Number of (n+2) X (5+2) 0..1 arrays with no 3·3 subblock diagonal sum less than the antidiagonal sum or central row sum less than the central column sum. A258891

log(cos(arcsinh(x))) = -1/2!*x²+2/4!*x⁴-40/6!*x⁶+1360/8!*x⁸... A12241

arcsin(sec(x)*tanh(x))=x+2/3!*x³+40/5!*x⁵+1192/7!*x⁷+87680/9!*x⁹... A12834

Numbers n such that n + 4 and n - 4 are both prime. A87680