Properties of the Number 66887

Sixty-Six Thousand Eight Hundred Eighty-Seven

Basics

Value: 66886 → 66887 → 66888

Parity: odd

Prime: No

Previous Prime: 66883

Next Prime: 66889

Digit Sum: 35

Digital Root: 8

Palindrome: No

Factorization: 211 × 317

Divisors: 1, 211, 317, 66887

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000010101000111

Octal: 202507

Duodecimal: 3285B

Hexadecimal: 10547

Square: 4473870769

Square Root: 258.62521145472266

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

Integers arising in A133677. A133645

Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 51 ones. A31819

Semiprimes of the form S(n) + T(n) where S(n) and T(n) are the n-th square and the n-th triangular numbers. A240914

T(n,2), array T as in A054126. A54128

Numbers k such that ω(φ(k)) = ω(k) where φ is the Euler totient function and ω(k) is the number of repeated prime factors in k. A66887