Properties of the Number 66989

Sixty-Six Thousand Nine Hundred Eighty-Nine

Basics

Value: 66988 → 66989 → 66990

Parity: odd

Prime: No

Previous Prime: 66977

Next Prime: 67003

Digit Sum: 38

Digital Root: 2

Palindrome: No

Factorization: 13 × 5153

Divisors: 1, 13, 5153, 66989

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000010110101101

Octal: 202655

Duodecimal: 32925

Hexadecimal: 105ad

Square: 4487526121

Square Root: 258.8223328849348

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

n-th positive integer whose digits sum up to n. A81927

n-th zerofree positive number with digital sum n. A181178

a(n) = (n!)³ * ∑_i=1..n 1/i³. A66989

Products of 6 distinct primes that are sandwiched between semiprime numbers. A378627