Properties of the Number 61890

Sixty-One Thousand Eight Hundred Ninety

Basics

Value: 61889 → 61890 → 61891

Parity: even

Prime: No

Previous Prime: 61879

Next Prime: 61909

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 5 × 2063

Divisors: 1, 2, 3, 5, 6, 10, 15, 30, 2063, 4126

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1111000111000010

Octal: 170702

Duodecimal: 2B996

Hexadecimal: f1c2

Square: 3830372100

Square Root: 248.77700858399274

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

G.f.: A(x) = exp( ∑_n>=1 A000172(n)*xⁿ/(2·n) ) where Franel number A000172(n) = ∑_k=0..n C(n,k)³. A166991

Positions of A080313 in A014486. A80312

Squares that are the sum of initial primes. A61890

Numbers k such that A383844(k) and A383844(k+1) are nonzero. A384310