Properties of the Number 64040

Sixty-Four Thousand Forty

Basics

Value: 64039 → 64040 → 64041

Parity: even

Prime: No

Previous Prime: 64037

Next Prime: 64063

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 ³ × 5 × 1601

Divisors: 1, 2, 4, 5, 8, 10, 20, 40, 1601, 3202

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1111101000101000

Octal: 175050

Duodecimal: 31088

Hexadecimal: fa28

Square: 4101121600

Square Root: 253.06125740618614

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

a(n) = n³ + n. A34262

a(n) = n OR n³ (applied to binary expansions). A8468

Numbers k such that 60·R_k + 1 is prime, where R_k = 11...1 is the repunit (A002275) of length k. A56658

a(n) = 8000·n + 40. A157663

a(n) = ∑_k=1..n φ(gcd(k, n))³. A342535

Number of composite k-Lehmer numbers up to 10ⁿ. A234958

a(n) = n XOR n³. A261807

a(n) = n*(n² + 1) if n is even, otherwise (n - 1/2)*(n² + 1). A71289

a(n) = n + [n² if n is odd or n³ if n is even]. A181427

Numbers k such that k = m*(m² + 1) where m² + 1 is prime. A382617