Properties of the Number 64969

Sixty-Four Thousand Nine Hundred Sixty-Nine

Basics

Value: 64968 → 64969 → 64970

Parity: odd

Prime: Yes

Previous Prime: 64951

Next Prime: 64997

Digit Sum: 34

Digital Root: 7

Palindrome: No

Factorization: 64969

Divisors: 1, 64969

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111110111001001

Octal: 176711

Duodecimal: 31721

Hexadecimal: fdc9

Square: 4220970961

Square Root: 254.89017242726328

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 {4, 6, 9} as digits. A107666

Primes whose digits are composite; primes having only {4, 6, 8, 9} as digits. A51416

Primes p of Erdos-Selfridge class 5+ with largest prime factor of p+1 not of class 4+. A129473

Fifth term of weak prime sextet: p(m-3)-p(m-4) < p(m-2)-p(m-3) < p(m-1)-p(m-2) < p(m)-p(m-1) < p(m+1)-p(m). A54832

Sixth term of weak prime septet: p(m-4)-p(m-5) < p(m-3)-p(m-4) < p(m-2)-p(m-3) < p(m-1)-p(m-2) < p(m)-p(m-1) < p(m+1)-p(m). A54839

G.f. A(x) satisfies A(x) = 1 / ((1 - x) * (1 - 2·x * (1 + x + x² + x³) * A(x⁴))). A390658

Sixth term of weak prime sextet: p(m-4)-p(m-5) < p(m-3)-p(m-4) < p(m-2)-p(m-3) < p(m-1)-p(m-2) < p(m)-p(m-1). A54833

Triangle T(n,k) = binomial(n,k) + A176490(n,k) - 1 read along rows 0<=k<=n. A176491

First of four consecutive primes p,q,r,s such that 2·p+q+r+s, p+2·q+r+s, p+q+2·r+s and p+q+r+2·s are all prime. A349586

Primes having only {0, 4, 6, 9} as digits. A386073