Properties of the Number 67391

Sixty-Seven Thousand Three Hundred Ninety-One

Basics

Value: 67390 → 67391 → 67392

Parity: odd

Prime: Yes

Previous Prime: 67369

Next Prime: 67399

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 67391

Divisors: 1, 67391

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000011100111111

Octal: 203477

Duodecimal: 32BBB

Hexadecimal: 1073f

Square: 4541546881

Square Root: 259.59776578391427

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) = 52·n² - 1. A158640

a(n) is the least prime p such that (p² - 6)/5ⁿ is prime. A358426

a(n) is the smallest prime p such that there is a multiplicative subgroup H of Z/pZ, of odd order and of index 2n, such that for any two cosets H1 and H2 of H, H1 + H2 contains all of (Z/pZ)\0, except that H+H contains all of (Z/pZ)\0 except -H. If no such prime exists, a(n) = 0. A294615

a(n) is the least common multiple of numbers in {1,2,3,...,n-1} which do not divide n. A67391