Properties of the Number 66222

Sixty-Six Thousand Two Hundred Twenty-Two

Basics

Value: 66221 → 66222 → 66223

Parity: even

Prime: No

Previous Prime: 66221

Next Prime: 66239

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 13 × 283

Divisors: 1, 2, 3, 6, 9, 13, 18, 26, 39, 78

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000001010101110

Octal: 201256

Duodecimal: 323A6

Hexadecimal: 102ae

Square: 4385353284

Square Root: 257.3363557680881

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

Square array T(n,k) (n >= 1, k >= 0) read by antidiagonals: coordination sequence for root lattice A_n. A103881

The number of integer sequences of length d = 2n+1 such that the sum of the terms is 0 and the sum of the absolute values of the terms is d-1. A156554

Number of 3-element ordered antichains on an unlabeled n-element set; T₁-hypergraphs with 3 labeled nodes and n hyperedges. A56005

Numbers with at least 2 distinct digits and whose "rotations" (including the number itself) are multiples of these digits; repeated digits allowed but digit 0 not allowed. A66484

a(n) = A104908(n) - 100·A104803(n). A104910

Coordination sequence for A₈ lattice. A8391

a(n) is the smallest number which can be represented as the sum of n distinct positive cubes in exactly n ways, or 0 if no such number exists. A350270

Number of integer sequences of length n+1 with sum zero and sum of absolute values 8. A157053

Number of nX3 0..1 arrays with every element equal to 0, 1, 2, 4, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero. A300309

Bisection of A001189. A66222