Properties of the Number 64871

Sixty-Four Thousand Eight Hundred Seventy-One

Basics

Value: 64870 → 64871 → 64872

Parity: odd

Prime: Yes

Previous Prime: 64853

Next Prime: 64877

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 64871

Divisors: 1, 64871

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1111110101100111

Octal: 176547

Duodecimal: 3165B

Hexadecimal: fd67

Square: 4208246641

Square Root: 254.69786021873054

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 of the form 2·n² + 50·n + 23. A217496

a(n) = ∑_{k=0..floor(n/4)} 2^k * binomial(2·n-6·k+1,2·k+1). A387629

Number of pairs (λ,μ) of partitions λ of n and μ of three with μ <= λ (by diagram containment). A303853

Dirichlet convolution of the integer partition numbers A000041 with the strict partition numbers A000009. A323765

Primes p from A031924 such that A052180(primepi(p)) = 29. A52236

The minimal number which has multiplicative persistence 7 in base n. A64871

a(n) = |{0 < k < n: r = φ(k) + φ(n-k)/6 + 1 and p(r) + q(r) are both prime}|, where φ(.) is Euler's totient function, p(.) is the partition function (A000041) and q(.) is the strict partition function (A000009). A236419