Properties of the Number 66199

Sixty-Six Thousand One Hundred Ninety-Nine

Basics

Value: 66198 → 66199 → 66200

Parity: odd

Prime: No

Previous Prime: 66191

Next Prime: 66221

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 7 ³ × 193

Divisors: 1, 7, 49, 193, 343, 1351, 9457, 66199

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000001010010111

Octal: 201227

Duodecimal: 32387

Hexadecimal: 10297

Square: 4382307601

Square Root: 257.2916632928475

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 12-regular partitions of n (no part is a multiple of 12). A328546

Number of partitions of n having (sum of odd parts) > (sum of even parts). A239262

Number of partitions of n having (sum of odd parts) >= (sum of even parts). A239263

Numbers k such that k and k+1 are both in A376616. A376793

Numbers that are the same upside down (using only digits 0, 1, 6 and 9). A169731

a(n) = 144·n² - 161·n + 45. A156711

Denominators of continued fraction convergents to sqrt(865). A42671

Numbers n such that A118799(n) = 0. A118578

Strobogrammatic nonpalindromic numbers. A287092

a(1) = 1; for n > 1, a(n) = a(n-1)-(n+1) if this is positive and has not already appeared in the sequence, otherwise a(n) = a(n-1)+(n+1). A66199