Properties of the Number 66919

Sixty-Six Thousand Nine Hundred Nineteen

Basics

Value: 66918 → 66919 → 66920

Parity: odd

Prime: Yes

Previous Prime: 66889

Next Prime: 66923

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 66919

Divisors: 1, 66919

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000010101100111

Octal: 202547

Duodecimal: 32887

Hexadecimal: 10567

Square: 4478152561

Square Root: 258.68706964206774

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

Minimal exponents m such that the fractional part of (101/100)^m obtains a minimum (when starting with m=1). A153669

Numbers k such that (3^k + 19^k)/22 is prime. A128075

The generalized Conway-Guy sequence w¹. A6755

Greatest number m such that the fractional part of (101/100)^A153669(n) <= 1/m. A153673

a(n) = least number of applications of f to n to reach 1, where f is defined by f(n) = φ(n) if n is even; = σ(n) if n is odd. A66919