Properties of the Number 66741

Sixty-Six Thousand Seven Hundred Forty-One

Basics

Value: 66740 → 66741 → 66742

Parity: odd

Prime: No

Previous Prime: 66739

Next Prime: 66749

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 22247

Divisors: 1, 3, 22247, 66741

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000010010110101

Octal: 202265

Duodecimal: 32759

Hexadecimal: 104b5

Square: 4454361081

Square Root: 258.34279552563487

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

Conjectured smallest Sierpiński numbers of the second kind S, base b=2,3,4,5,..., where S·bⁿ+1 is composite for all n>=1 and gcd(S+1, b-1) = 1. A123159

Numbers k such that sum of the divisors of k equals the sum of the reversals of the divisors of k. Numbers with all palindrome divisors are not in the sequence. A196677

Odd numbers n not congruent to 5 mod 6 such that for all k >= 1 the numbers n·4^k + 1 are composite. A251057

Odd numbers n divisible by 3 such that for all k >= 1 the numbers n·2^k + 1 and n·2^k+1 + 1 do not form a pair of primes. A243857

Odd numbers n divisible by 3 such that for all k >= 1 the numbers n·4^k + 1 are composite. A256002

Pentagonal numbers not divisible by 10 whose reverse is a square. A66741