Properties of the Number -61720

Sixty-One Thousand Seven Hundred Twenty

Basics

Value: -61721 → -61720 → -61719

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 ³ × 5 × 1543

Divisors: 1, 2, 4, 5, 8, 10, 20, 40, 1543, 3086

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -1111000100011000

Octal: -170430

Duodecimal: -2B874

Hexadecimal: -f118

Square: 3809358400

Square Root: 248.43510218968655

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

Expansion of x*(2 - x)/(1 - 5·x + 3·x² - x³). A361358

Square array read by antidiagonals downwards: for n >= 2, T(k,n) is the number of permutations of [k+n] that differ in every position from both the identity permutation and a permutation consisting of k 1-cycles and one n-cycle. A335391

Integer part of ((4th elementary symmetric function of 1,2,...,n)/(1+2+...+n)). A24171

Number of active (ON, black) cells at stage 2ⁿ-1 of the two-dimensional cellular automaton defined by "Rule 157", based on the 5-celled von Neumann neighborhood. A270330