Properties of the Number 66261

Sixty-Six Thousand Two Hundred Sixty-One

Basics

Value: 66260 → 66261 → 66262

Parity: odd

Prime: No

Previous Prime: 66239

Next Prime: 66271

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 13 × 1699

Divisors: 1, 3, 13, 39, 1699, 5097, 22087, 66261

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000001011010101

Octal: 201325

Duodecimal: 32419

Hexadecimal: 102d5

Square: 4390520121

Square Root: 257.41212092673493

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

Number of 2's in all partitions of n. A24786

a(1)=1; for n>1, a(n) = a(n-1) + n⁰ if n odd, a(n) = a(n-1) + n³ if n is even. A135332

Number of multisets of exactly ten partitions of positive integers into distinct parts with total sum of parts equal to n. A320795

Numbers k such that (8·10^k - 101)/3 is prime. A294121

a(n) = A066260(A066260(n)). A66261