Properties of the Number 16604

Sixteen Thousand Six Hundred Four

Basics

Value: 16603 → 16604 → 16605

Parity: even

Prime: No

Previous Prime: 16603

Next Prime: 16607

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 ² × 7 × 593

Divisors: 1, 2, 4, 7, 14, 28, 593, 1186, 2372, 4151

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100000011011100

Octal: 40334

Duodecimal: 9738

Hexadecimal: 40dc

Square: 275692816

Square Root: 128.8565093427569

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

Denominators of convergents to π by Farey fractions. A63673

Triangle read by rows: T(n, k) = number of permutations that are k "block reversals" away from 12...n, for n >= 0, and (for n>0) 0 <= k <= n-1. A300003

a(n) = ∑_k=0..7 (n + k)². A276026

Number of permutations that are n-3 "block reversals" away from 12...n. A7974

Numbers k such that k¹⁰ == 1 (mod 11⁴). A56094

The next smallest pair of numbers is taken so that a(2n-1)/a(2n) converges to π. A57082

E.g.f. satisfies A(x) = -log(1 - x) * exp(2·A(x)). A357333

Number of permutations of 1..n with displacements restricted to {-7,-6,-5,-4,-3,-2,0,1}. A189600

Records in A224796. A224719

Number n such that the sum of its proper evil divisors (A001969) equals n. A230587