Properties of the Number -615681

Six Hundred Fifteen Thousand Six Hundred Eighty-One

Basics

Value: -615682 → -615681 → -615680

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ⁴ × 11 × 691

Divisors: 1, 3, 9, 11, 27, 33, 81, 99, 297, 691

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

9108 Try Today's Challenge

Representations

Binary: -10010110010100000001

Octal: -2262401

Duodecimal: -258369

Hexadecimal: -96501

Square: 379063093761

Square Root: 784.6534266795755

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

Numbers that have exactly 9 representations as a k-gonal number, P(n,k) = n*((k-2)*n - (k-4))/2, k and n >= 3. A321159

Value of p² + (p-1)²/2 as p runs through A001359 (the lesser of twin primes). A372069