Properties of the Number 63805

Sixty-Three Thousand Eight Hundred Five

Basics

Value: 63804 → 63805 → 63806

Parity: odd

Prime: No

Previous Prime: 63803

Next Prime: 63809

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 5 × 7 × 1823

Divisors: 1, 5, 7, 35, 1823, 9115, 12761, 63805

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111100100111101

Octal: 174475

Duodecimal: 30B11

Hexadecimal: f93d

Square: 4071078025

Square Root: 252.5965162071718

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

Triangle read by rows: T(n,k) is the number of partitions of an n-set having k blocks of size > 1 (0<=k<=floor(n/2)). A124324

Triangle read by rows, T(n, k) = ∑_j=0..n C(n-j, n-k)*E2(n, j), where E2 are the second-order Eulerian numbers A201637, for n >= 0 and 0 <= k <= n. A112493

Sum of largest parts (counted with multiplicity) of all partitions of n. A92321

Fourth column of triangle A112493 used for e.g.f.s of Stirling2 diagonals. A112496

Number of nonisomorphic oriented matroids with n points in dimensions 2 through n-1. A63805