Properties of the Number 61885

Sixty-One Thousand Eight Hundred Eighty-Five

Basics

Value: 61884 → 61885 → 61886

Parity: odd

Prime: No

Previous Prime: 61879

Next Prime: 61909

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 5 × 12377

Divisors: 1, 5, 12377, 61885

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111000110111101

Octal: 170675

Duodecimal: 2B991

Hexadecimal: f1bd

Square: 3829753225

Square Root: 248.766959220874

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

Table by antidiagonals of T(n,k) = 2·n*T(n,k-1) - n²*T(n,k-2) + T(n,k-4) starting with T(n,1) = 1. A73135

n + largest triangular number less than or equal to n. A61885

a(n+1) = a(n) written in base 7 (read in base 10); a(1) = 7. A23390