Properties of the Number 66618

Sixty-Six Thousand Six Hundred Eighteen

Basics

Value: 66617 → 66618 → 66619

Parity: even

Prime: No

Previous Prime: 66617

Next Prime: 66629

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 3701

Divisors: 1, 2, 3, 6, 9, 18, 3701, 7402, 11103, 22206

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10000010000111010

Octal: 202072

Duodecimal: 32676

Hexadecimal: 1043a

Square: 4437957924

Square Root: 258.1046299468493

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=0..n T(n,k) * T(n,2n-k), with T given by A027023. A27041

Both m and its reverse are one more than a square and m does not end in 0. A66618