Properties of the Number 67639

Sixty-Seven Thousand Six Hundred Thirty-Nine

Basics

Value: 67638 → 67639 → 67640

Parity: odd

Prime: No

Previous Prime: 67631

Next Prime: 67651

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 11 ² × 13 × 43

Divisors: 1, 11, 13, 43, 121, 143, 473, 559, 1573, 5203

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000100000110111

Octal: 204067

Duodecimal: 33187

Hexadecimal: 10837

Square: 4575034321

Square Root: 260.07498918581155

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

Number of defective (binary) heaps on n elements from the set {0,1} with exactly one defect. A372628

Numbers k such that 1000k+1, 1000k+3, 1000k+7, 1000k+9 are all primes. A64962

Row 4 of table in A067640. A67639