Properties of the Number 6416

Six Thousand Four Hundred Sixteen

Basics

Value: 6415 → 6416 → 6417

Parity: even

Prime: No

Previous Prime: 6397

Next Prime: 6421

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 ⁴ × 401

Divisors: 1, 2, 4, 8, 16, 401, 802, 1604, 3208, 6416

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1100100010000

Octal: 14420

Duodecimal: 3868

Hexadecimal: 1910

Square: 41165056

Square Root: 80.09993757800315

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

Multiples of 16 containing a 16 in their decimal representation. A121036

Numbers k such that k!!!!! + 1 is prime. A85148

BII-numbers of achiral set-systems. A330217

Numbers n such that n²+n+41 (Euler's "prime generating polynomial") is not squarefree. A97823

Number of cyclic subgroups of the group C_n x C_n x C_n x C_n, where C_n is the cyclic group of order n. A280184

Triangle read by rows: T(n,k) = number of regions in a "frame" of size n X k (see Comments for definition). A331457

T(n,k)=Number of nXk 0..2 arrays with new values 0..2 introduced in row major order and no element equal to any knight-move neighbor (colorings ignoring permutations of colors). A208434

The number of n-almost primes less than or equal to 9ⁿ, starting with a(0)=1. A116429

a(n) gives the length of A306211 after n generations. A306215

Relative of Hofstadter Q-sequence: a(n) = max(0, n+3201) for n <= 0; a(n) = a(n-a(n-1)) + a(n-a(n-2)) + a(n-a(n-3)) for n > 0. A373236