Properties of the Number 63920

Sixty-Three Thousand Nine Hundred Twenty

Basics

Value: 63919 → 63920 → 63921

Parity: even

Prime: No

Previous Prime: 63913

Next Prime: 63929

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ⁴ × 5 × 17 × 47

Divisors: 1, 2, 4, 5, 8, 10, 16, 17, 20, 34

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1111100110110000

Octal: 174660

Duodecimal: 30BA8

Hexadecimal: f9b0

Square: 4085766400

Square Root: 252.82404948896772

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

Chebyshev polynomial of the second kind U(3,n). A144138

Number of subsequences of {1..n} such that all differences of pairs of terms are distinct (i.e., number of Golomb rulers on {1..n}). A54578

a(n) = n³ - 2·n. A242135

Denominators of continued fraction convergents to sqrt(399). A41759

Number of North-East lattice paths from (0,0) to (n,n) that have exactly three east steps below the subdiagonal y = x-1. A268370

Numbers k such that k = 2*φ(k) + φ(φ(k)). A63920

Number of nX7 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 0 and 0 1 1 vertically. A208419