Properties of the Number 61990

Sixty-One Thousand Nine Hundred Ninety

Basics

Value: 61989 → 61990 → 61991

Parity: even

Prime: No

Previous Prime: 61987

Next Prime: 61991

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 × 5 × 6199

Divisors: 1, 2, 5, 10, 6199, 12398, 30995, 61990

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111001000100110

Octal: 171046

Duodecimal: 2BA5A

Hexadecimal: f226

Square: 3842760100

Square Root: 248.97791066678988

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

Sum of terms in level n of TRIP - Stern sequence associated with permutation triple (e, e, e). A278612

Number of ordered triples (w,x,y) with all terms in {-n,...-1,1,...,n} and w+2x+2y>0. A211624

Number of ways to place 4 nonattacking queens on a 4 X n board. A61990