Properties of the Number 66622

Sixty-Six Thousand Six Hundred Twenty-Two

Basics

Value: 66621 → 66622 → 66623

Parity: even

Prime: No

Previous Prime: 66617

Next Prime: 66629

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 × 33311

Divisors: 1, 2, 33311, 66622

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10000010000111110

Octal: 202076

Duodecimal: 3267A

Hexadecimal: 1043e

Square: 4438490884

Square Root: 258.11237862605503

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

G.f.: A(x) = 1+x*(1+x*(1+x*(...(1+x*(...)^-n )...)^-3)^-2)^-1. A121587

Triangle read by rows: T(m,n) is the label of the largest square that an (m,n)-leaper (a generalization of a chess knight) reaches before it can no longer move, starting on a board with squares spirally numbered, starting at 1; 1 <= n < m. Each move is to the lowest-numbered unvisited square. A306197

Concatenation of prime numbers in increasing order up to the n-th and then in decreasing order. A66622

G.f.: A(x) = 1/(1 - x·B(x)), where B(x) = 1/(1 - x·C(x)²); C(x) = 1/(1 - x·D(x)³); D(x) = 1/(1 - x·E(x)⁴); ... A197772