Properties of the Number 80689

Eighty Thousand Six Hundred Eighty-Nine

Basics

Value: 80688 → 80689 → 80690

Parity: odd

Prime: No

Previous Prime: 80687

Next Prime: 80701

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 7 × 11527

Divisors: 1, 7, 11527, 80689

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011101100110001

Octal: 235461

Duodecimal: 3A841

Hexadecimal: 13b31

Square: 6510714721

Square Root: 284.05809265007747

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

One-fourth of the total number of edges in the graph (see A392172) formed when n points are placed in general position on each edge of a square and a chord is drawn from each point to the 3·n points on the other three sides. A392174

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, -1, 0), (-1, 1, 1), (0, 0, 1), (1, 0, -1)}. A148090

Expansion of e.g.f. 1 / (1 + log(1 - 4·x))^1/4. A367426

Powers of 10 that reach ...,7,8,4,2,1 under the mapping: if n is even divide by 2 else add 1. A80689