Properties of the Number -105664

One Hundred Five Thousand Six Hundred Sixty-Four

Basics

Value: -105665 → -105664 → -105663

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ⁶ × 13 × 127

Divisors: 1, 2, 4, 8, 13, 16, 26, 32, 52, 64

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11001110011000000

Octal: -316300

Duodecimal: -51194

Hexadecimal: -19cc0

Square: 11164880896

Square Root: 325.0599944625607

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

Harmonic or Ore numbers: numbers k such that the harmonic mean of the divisors of k is an integer. A1599

Numbers whose divisors' harmonic and arithmetic means are both integers. A7340

Harmonic numbers m from A001599 such that m*(m-τ(m))/σ(m) is not an integer, where k-τ(k) = the number of nondivisors of k (A049820), τ(k) = the number of divisors of k (A000005) and σ(k) = the sum of the divisors of k (A000203). A325022

Harmonic numbers (A001599) which are not perfect (A000396). A90945

Harmonic numbers k such that k·p is not a harmonic number for all the primes p that do not divide k. A335369

Numbers whose numerator and denominator of the harmonic mean of their divisors are both Fibonacci numbers. A348658

Numbers k such that the continued fraction of the harmonic mean of the divisors of k contains a single distinct element. A349476

Harmonic numbers that are not multiply-perfect. A140798

Numbers n such that harmonic mean of the divisors of n is a prime. A74247

a(n) = smallest number m such that m*τ(m)/σ(m) = n, or 0 if no such m exists. A91911