Properties of the Number 66409

Sixty-Six Thousand Four Hundred Nine

Basics

Value: 66408 → 66409 → 66410

Parity: odd

Prime: No

Previous Prime: 66403

Next Prime: 66413

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 7 × 53 × 179

Divisors: 1, 7, 53, 179, 371, 1253, 9487, 66409

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000001101101001

Octal: 201551

Duodecimal: 32521

Hexadecimal: 10369

Square: 4410155281

Square Root: 257.6994373296147

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 labeled rooted trees with a forbidden limb of length 3. A52322

Decimal part of n-th root of a(n) starts with digit 4. A34081

Triangle read by rows: row n gives coefficients T(n,k), in descending powers of m, of a polynomial P_n(m) (of degree n - 1) in an expression for the number of bimonotone subdivisions B(m,n) of a grid with two rows. A336245

Least positive integer not representable using exactly n 9's and the operations +-*/(). A66409