Properties of the Number -176661

One Hundred Seventy-Six Thousand Six Hundred Sixty-One

Basics

Value: -176662 → -176661 → -176660

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ⁵ × 727

Divisors: 1, 3, 9, 27, 81, 243, 727, 2181, 6543, 19629

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101011001000010101

Octal: -531025

Duodecimal: -86299

Hexadecimal: -2b215

Square: 31209108921

Square Root: 420.3105994380822

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

Consider the aliquot parts, in ascending order, of a composite number. Take their sum and repeat the process deleting the minimum number and adding the previous sum. The sequence lists the numbers that after some iterations reach a sum equal to themselves. A246544

2-hyperperfect numbers: n = 2*(σ(n) - n - 1) + 1. A7593

Hyperperfect numbers: x such that x = 1 + k*(σ(x)-x-1) for some k > 0. A34897

Hyperperfect numbers: k = m*(σ(k) - k - 1) + 1 for some m > 1. A7592

Sum 3^max(k,n-k),k=0..n. A107660

Nonsemiprime hyperperfect numbers. A133447

Composite numbers k such that the sum of their aliquot parts divides k+1. A306532

Bi-unitary k-hyperperfect numbers: numbers m such that m = 1 + k * (bsigma(m) - m - 1) where bsigma(m) is the sum of bi-unitary divisors of m (A188999) and k >= 1 is an integer. A309568