Properties of the Number 80641

Eighty Thousand Six Hundred Forty-One

Basics

Value: 80640 → 80641 → 80642

Parity: odd

Prime: No

Previous Prime: 80629

Next Prime: 80651

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 11 × 7331

Divisors: 1, 11, 7331, 80641

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8109 Try Today's Challenge

Representations

Binary: 10011101100000001

Octal: 235401

Duodecimal: 3A801

Hexadecimal: 13b01

Square: 6502970881

Square Root: 283.97359032135364

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) = 2·n! + 1. A52898

a(n) = (16ⁿ-3ⁿ)/13. A180845

Triangular array read by rows: T(n,k) = n!*k + 1, n >= 1, 1 <= k <= n. A362777

Triangle, read by rows, T(n, k) = T(n, k-1) + (k+1)*n!, T(n, 0) = 1. A105064

Number of walks within N² (the first quadrant of Z²) starting and ending at (0,0) and consisting of n steps taken from {(-1, -1), (-1, 0), (-1, 1), (0, -1), (1, 0), (1, 1)}. A151369

a(1) = 4; for n>1, a(n) is taken to be the smallest integer greater than a(n-1) which is consistent with the condition "n is a member of the sequence if and only if a(n) is divisible by 5". A80641