Properties of the Number 80766

Eighty Thousand Seven Hundred Sixty-Six

Basics

Value: 80765 → 80766 → 80767

Parity: even

Prime: No

Previous Prime: 80761

Next Prime: 80777

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 7 × 641

Divisors: 1, 2, 3, 6, 7, 9, 14, 18, 21, 42

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011101101111110

Octal: 235576

Duodecimal: 3A8A6

Hexadecimal: 13b7e

Square: 6523146756

Square Root: 284.193595986961

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

Graham-Sloane-type lower bound on the size of a ternary (n,3,6) constant-weight code. A30506

a(n) = s(n+3)/5, where s is A024729. A24730

A unitary φ reciprocal amicable number: consider two different numbers r, s which satisfy the following equation for some integer k: uphi(r) = uphi(s) = (1/k) * r·s / (r-s); or equivalently, 1/uphi(r) = 1/uphi(s) = k * (1/s - 1/r); sequence gives r numbers. A80766