Properties of the Number 66686

Sixty-Six Thousand Six Hundred Eighty-Six

Basics

Value: 66685 → 66686 → 66687

Parity: even

Prime: No

Previous Prime: 66683

Next Prime: 66697

Digit Sum: 32

Digital Root: 5

Palindrome: No

Factorization: 2 × 33343

Divisors: 1, 2, 33343, 66686

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000010001111110

Octal: 202176

Duodecimal: 32712

Hexadecimal: 1047e

Square: 4447022596

Square Root: 258.23632587225217

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

Numbers with digits 6 and 8 only. A284635

Number of parts that are multiples of 3 in all partitions of n. A116635

a(n) is the end square spiral number for a knight starting on square n moving on a board with squares numbered with the square of their distance from the 0-square origin and where the knight moves to the smallest numbered unvisited square; the smallest spiral number ordering is used if the distances are equal. A326931

Near-repdigit semiprimes with 6 as repeated digit. A105987

Array T(i,j) read by antidiagonals, where T(i,j) is the concatenation of i and j (1<=i, 1<=j). A66686