Properties of the Number -164745

One Hundred Sixty-Four Thousand Seven Hundred Forty-Five

Basics

Value: -164746 → -164745 → -164744

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 5 × 7 × 523

Divisors: 1, 3, 5, 7, 9, 15, 21, 35, 45, 63

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101000001110001001

Octal: -501611

Duodecimal: -7B409

Hexadecimal: -28389

Square: 27140915025

Square Root: 405.8879155629051

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

Triangle read by rows: T(n,k) is the number of linear chord diagrams on 2n vertices with one marked chord such that exactly k of the remaining n-1 chords cross the marked chord. A336598

Number of singletons (strong fixed points) in pair-partitions. A233481

The Riordan square of the double factorial of odd numbers. Triangle T(n, k), 0 <= k <= n, read by rows. A321627

Expansion of e.g.f.: sech(arcsinh(x)+log(x+1))=1-4/2!*x²+6/3!*x³+69/4!*x⁴-330/5!*x⁵... A13080