Properties of the Number 66651

Sixty-Six Thousand Six Hundred Fifty-One

Basics

Value: 66650 → 66651 → 66652

Parity: odd

Prime: No

Previous Prime: 66643

Next Prime: 66653

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 13 × 1709

Divisors: 1, 3, 13, 39, 1709, 5127, 22217, 66651

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 10000010001011011

Octal: 202133

Duodecimal: 326A3

Hexadecimal: 1045b

Square: 4442355801

Square Root: 258.1685495950272

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

Larger of Smith brothers. A50220

Number of ordered unlabeled rooted trees with n nodes such that the minimal outdegree of inner nodes equals 5. A244534

Berend Jan van der Zwaag's conjectured complete list of numbers that start different "expanding periodic loops" under the mapping described in A053392 and A060630. A103117

Numbers k such that the k-th triangular number contains only digits {1,2,6}. A119104

Primes of the form 2·s + 1, where s is a squarefree number (A005117). A66651

Triangular numbers (A000217) in A353729. A370520

Beastly primes with beastly prime indices, i.e., primes p such that both the decimal representation of p and the decimal representation of the index of p in A000040 contain the substring "666". A305827