Properties of the Number 61641

Sixty-One Thousand Six Hundred Forty-One

Basics

Value: 61640 → 61641 → 61642

Parity: odd

Prime: No

Previous Prime: 61637

Next Prime: 61643

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ⁴ × 761

Divisors: 1, 3, 9, 27, 81, 761, 2283, 6849, 20547, 61641

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1111000011001001

Octal: 170311

Duodecimal: 2B809

Hexadecimal: f0c9

Square: 3799612881

Square Root: 248.276056034407

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

Partial sums of A299281. A299282

Denominators of continued fraction convergents to sqrt(767). A42479

Fourier coefficients of the modular form (1/t_3A²) * F_3A¹². A341558

Pure numbers in the Collatz (3x+1) iteration. Also called pure hailstone numbers. A61641

Consider the base-7 Kaprekar map n->K(n) defined in A165071. Sequence gives numbers belonging to cycles of length greater than 1. A165078