Properties of the Number 76921

Seventy-Six Thousand Nine Hundred Twenty-One

Basics

Value: 76920 → 76921 → 76922

Parity: odd

Prime: No

Previous Prime: 76919

Next Prime: 76943

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 13 × 61 × 97

Divisors: 1, 13, 61, 97, 793, 1261, 5917, 76921

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 10010110001111001

Octal: 226171

Duodecimal: 38621

Hexadecimal: 12c79

Square: 5916840241

Square Root: 277.34635386101615

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

Strong pseudoprimes to base 6. A20232

Numbers k that divide σ(k²) where σ is the sum of divisors function (A000203). A232354

Numbers k such that (1/k) * ∑_d∣k d*σ(d) is an integer. A69520

Numbers k such that σ(k²) and ∑_d∣k d*σ(d) are both multiples of k. A232067

Numbers n such that n = gcd(n², σ(n²)). A247222

Smallest number such that the highest common factor of pair of successive terms follows the pattern 1, 1, 2, 2, 3, 3, 4, 4, ..., i.e., b(2n-1) = b(2n) = n given by A004526. A76921