Properties of the Number 80865

Eighty Thousand Eight Hundred Sixty-Five

Basics

Value: 80864 → 80865 → 80866

Parity: odd

Prime: No

Previous Prime: 80863

Next Prime: 80897

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 5 × 599

Divisors: 1, 3, 5, 9, 15, 27, 45, 135, 599, 1797

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011101111100001

Octal: 235741

Duodecimal: 3A969

Hexadecimal: 13be1

Square: 6539148225

Square Root: 284.3677196870278

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

a(n) = 56·n² + 1. A158660

Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-2) + 1, where a(0) = 1, a(1) = 2, b(0) = 3. A294533

Numbers divisible by 3 in the decimal expansion of π, contiguous and smallest. A164525

Order of symmetry groups of n points on 3-dimensional sphere with minimal distance between them maximized, also known as hostile neighbor or Tammes problem. A80865

Column 2 of triangle A113993, also equals column 0 of A113983³. A113994