Properties of the Number 80655

Eighty Thousand Six Hundred Fifty-Five

Basics

Value: 80654 → 80655 → 80656

Parity: odd

Prime: No

Previous Prime: 80651

Next Prime: 80657

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 × 19 × 283

Divisors: 1, 3, 5, 15, 19, 57, 95, 283, 285, 849

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011101100001111

Octal: 235417

Duodecimal: 3A813

Hexadecimal: 13b0f

Square: 6505229025

Square Root: 283.9982394311627

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

Numbers n such that the number of divisors of n+1 divides n and the number of divisors of n divides n+1. A272353

a(n) = 2401·n² - 980·n + 99. A157375

a(n) = (8·n+3)*(8·n+5). A177065

a(n)=a(n-1)²*2ⁿ-1 where a(0)=1. A73589

a(1) = a(2) = 1; for n >= 2, a(n+1) = a(n) + a(j(n)) where j(m) = largest divisor of m that is < m. A80655