Properties of the Number 61893

Sixty-One Thousand Eight Hundred Ninety-Three

Basics

Value: 61892 → 61893 → 61894

Parity: odd

Prime: No

Previous Prime: 61879

Next Prime: 61909

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 13 × 23 ²

Divisors: 1, 3, 9, 13, 23, 39, 69, 117, 207, 299

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111000111000101

Octal: 170705

Duodecimal: 2B999

Hexadecimal: f1c5

Square: 3830743449

Square Root: 248.78303800701525

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) = ∑_k=1..n gcd(k, n)³. A343497

Number of trees on n vertices with an odd number of leaves. A262431

Number of involutions of [n] having exactly one peak. A303649

Triangle read by rows: T(n,k) is the number of ordered trees with n edges and having k branches of even length (n>=0, 0<=k<=floor(n/2)). A102004

Number of n X 4 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 1 0 1 vertically. A207165

[ exp(3/7)*n! ]. A30965

Table of Lionel-Levine-sequence generated by (1,0,0). A61893