Properties of the Number 66922

Sixty-Six Thousand Nine Hundred Twenty-Two

Basics

Value: 66921 → 66922 → 66923

Parity: even

Prime: No

Previous Prime: 66919

Next Prime: 66923

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 × 33461

Divisors: 1, 2, 33461, 66922

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000010101101010

Octal: 202552

Duodecimal: 3288A

Hexadecimal: 1056a

Square: 4478554084

Square Root: 258.69286808878206

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

a(n) = 2·a(n-1) + a(n-2), with a(0) = 1, a(1) = 2, a(2) = 4. A52542

a(n) = τ(n)*Pell(n), where τ(n) = A000005(n), the number of divisors of n. A204270

Numbers k such that 2·k² - 4 is a square. A75870

Numerators of fractions in a 'zero-transform' approximation of sqrt(2) by means of a(n) = (a(n-1) + c)/(a(n-1) + 1) with c=2 and a(1)=0. A163271

Numerators of "Farey fraction" approximations to sqrt(2). A119016

Fixed-j dispersion for Q = 8: Square array D(g,h) (g, h >= 1), read by ascending antidiagonals. A120860

Numerators of principal and intermediate convergents to 2^1/2. A143607

Numerators of the upper principal and intermediate convergents to 2^1/2. A143609

Series ratios converge alternately to sqrt(2) and 1+sqrt(1/2). A82766

Lexicographically earliest sequence of distinct positive integers with no finite subset summing to a positive Pell number (A000129). A354005