Properties of the Number 64775

Sixty-Four Thousand Seven Hundred Seventy-Five

Basics

Value: 64774 → 64775 → 64776

Parity: odd

Prime: No

Previous Prime: 64763

Next Prime: 64781

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 5 ² × 2591

Divisors: 1, 5, 25, 2591, 12955, 64775

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1111110100000111

Octal: 176407

Duodecimal: 3159B

Hexadecimal: fd07

Square: 4195800625

Square Root: 254.50933185248826

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

Indices of triple-safe primes: p=prime(n) is double-safe: q=(p-1)/2, r=(q-1)/2 and s=(r-1)/2 are all prime (and q is double-safe). A75134

Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 0100-1110-0111-0010 pattern in any orientation. A146910

Number of positive integers k <= n such that all prime divisors of k are <= sqrt(k). A64775

Number of 8 X n integer matrices (m_i,j) such that m_1,1=0, m_8,n=2, and all rows, columns, and falling diagonals are (weakly) monotonic without jumps of 2. A323972