Properties of the Number 66067

Sixty-Six Thousand Sixty-Seven

Basics

Value: 66066 → 66067 → 66068

Parity: odd

Prime: Yes

Previous Prime: 66047

Next Prime: 66071

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 66067

Divisors: 1, 66067

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000001000010011

Octal: 201023

Duodecimal: 32297

Hexadecimal: 10213

Square: 4364848489

Square Root: 257.0350170696592

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

Primes having only {0, 6, 7} as digits. A385770

Septic artiads: primes p congruent to 1 mod 14 for which all solutions of the congruence x³ + x² - 2x - 1 == 0 (mod p) are 7th power residues. A270800

Primes equal to a hexagonal number plus 1. A285790

Expansion of series reversion of x/(1 + x + 2·x⁴). A190590

Primes p such that x¹¹ = 2 has a solution mod p, but x^11² = 2 has no solution mod p. A70187

Primes of form n.0.n+1, where '.' represents concatenation. Or, primes of form 10^k+1*n + n + 1, where k is the number of digits in n. A96525

Largest prime < 10·a(n-1), a(1)=7. A124291

a(n) is the number of primes occurring between A053182(n) and A053183(n) (excluding the endpoints). A238399

Primes of the form p² + 18, where p is prime. A201688

Primes in A238399. A238400