Properties of the Number 61665

Sixty-One Thousand Six Hundred Sixty-Five

Basics

Value: 61664 → 61665 → 61666

Parity: odd

Prime: No

Previous Prime: 61657

Next Prime: 61667

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 × 4111

Divisors: 1, 3, 5, 15, 4111, 12333, 20555, 61665

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111000011100001

Octal: 170341

Duodecimal: 2B829

Hexadecimal: f0e1

Square: 3802572225

Square Root: 248.32438462623844

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 e.g.f.: log(1+x)/cos(sin(x)). A9425

Quotients obtained when σ(k) divides antisigma(k) with k = A076617(n), σ (A000203) is the sum of divisors function and antisigma (A024816) is the sum of the non-divisors of n less than n function. A353000

Number of (n+1)X6 0..2 arrays with the number of clockwise edge increases in every 2X2 subblock equal to two. A205833

Numbers n whose digits in their prime factorization are the same as those of the prime factorization of n+1. A61665