Properties of the Number 66667

Sixty-Six Thousand Six Hundred Sixty-Seven

Basics

Value: 66666 → 66667 → 66668

Parity: odd

Prime: No

Previous Prime: 66653

Next Prime: 66683

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 163 × 409

Divisors: 1, 163, 409, 66667

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000010001101011

Octal: 202153

Duodecimal: 326B7

Hexadecimal: 1046b

Square: 4444488889

Square Root: 258.1995352435786

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 Fibonacci numbers A000045(k), k <= 10ⁿ, which end in 4. A67275

Numbers n > 2 such that n divides the concatenation of n-2 and n-1. A88797

Numbers which have only digits 6 and 7 in base 10. A256292

Numbers of the form (10^a + 10^b + 1)/3. A237424

Numbers whose square has its digits in nondecreasing order. A28819

a(n)² is smallest square starting with a string of n 4's. A34984

Numbers having four 6's in base 10. A43516

Numbers k such that k² contains only digits {4,8,9}. A53966

Duplicate of A067275. A73552

Numbers k such that the k-th triangular number contains only digits {2,7,8}. A119179