Properties of the Number 67221

Sixty-Seven Thousand Two Hundred Twenty-One

Basics

Value: 67220 → 67221 → 67222

Parity: odd

Prime: No

Previous Prime: 67219

Next Prime: 67231

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 7 × 11 × 97

Divisors: 1, 3, 7, 9, 11, 21, 33, 63, 77, 97

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000011010010101

Octal: 203225

Duodecimal: 32A99

Hexadecimal: 10695

Square: 4518662841

Square Root: 259.2701294017496

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) = (1/24)*n*((4·n + 3)*(2·n² + 1) - 3*(-1)ⁿ). A325656

Number of n X n 0..13 matrices with all row and column sums equal. A67221

Number of (4+1)X(n+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally or antidiagonally, with no adjacent elements equal. A232593