Properties of the Number 74665

Seventy-Four Thousand Six Hundred Sixty-Five

Basics

Value: 74664 → 74665 → 74666

Parity: odd

Prime: No

Previous Prime: 74653

Next Prime: 74687

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 5 × 109 × 137

Divisors: 1, 5, 109, 137, 545, 685, 14933, 74665

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10010001110101001

Octal: 221651

Duodecimal: 37261

Hexadecimal: 123a9

Square: 5574862225

Square Root: 273.2489707208428

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

Strong pseudoprimes to base 2. A1262

Euler-Jacobi pseudoprimes: 2^(n-1/2) == (2 / n) mod n, where (2 / n) is a Jacobi symbol. A47713

Composite numbers k such that k == +-1 (mod 8) and 2^(k-1/2) == 1 (mod k). A6971

Strong pseudoprimes to base 4. A20230

Strong pseudoprimes to base 8. A20234

Composite numbers k == 1 (mod 4) such that (1 + i)^k == 1 + i (mod k), where i = sqrt(-1). A270698

Fermat pseudoprimes to base 2 with three prime factors. A215672

Fermat pseudoprimes to base 2 that are decagonal. A321870

Expansion of 1/((1-5x)(1-7x)(1-12x)). A20341

Sarrus numbers with more than 2 distinct prime factors. A80747