Properties of the Number 66801

Sixty-Six Thousand Eight Hundred One

Basics

Value: 66800 → 66801 → 66802

Parity: odd

Prime: No

Previous Prime: 66797

Next Prime: 66809

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 7 × 3181

Divisors: 1, 3, 7, 21, 3181, 9543, 22267, 66801

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000010011110001

Octal: 202361

Duodecimal: 327A9

Hexadecimal: 104f1

Square: 4462373601

Square Root: 258.45889421724297

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) = floor((π+e)^n*π). A121915

Sum of the squares of the larger parts of the partitions of 2n into two squarefree parts. A280322

Matrix inverse of triangle A101275 (number of Schröder paths). A102051

Column 1 of triangle A102051, which is the matrix inverse of triangle A101275 (number of Schroeder paths). A102052

A self-generating sequence: let S = {}, a(0) = 333; for n >= 1, factorize a(n-1), arrange prime factors in increasing order and append their digits to S; then a(n) is the 3-digit number formed from terms 3n, 3n+1, 3n+2 of S. Leading zeros are omitted from a(n). A66801