Properties of the Number 64290

Sixty-Four Thousand Two Hundred Ninety

Basics

Value: 64289 → 64290 → 64291

Parity: even

Prime: No

Previous Prime: 64283

Next Prime: 64301

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 5 × 2143

Divisors: 1, 2, 3, 5, 6, 10, 15, 30, 2143, 4286

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1111101100100010

Octal: 175442

Duodecimal: 31256

Hexadecimal: fb22

Square: 4133204100

Square Root: 253.5547278202479

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

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally, diagonally or antidiagonally, with no adjacent elements equal. A232515

Indices of prime numbers in A014260. A101762

Numbers k such that (5·3^k - 7)/2 is prime. A59622

Number of (n+1)X(5+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally, diagonally or antidiagonally, with no adjacent elements equal. A232512

Number of (5+1)X(n+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally, diagonally or antidiagonally, with no adjacent elements equal. A232520

Numbers n such that 185·2ⁿ-1 is prime. A50844

Number of (n+1)X(n+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally, diagonally or antidiagonally, with no adjacent elements equal. A232507

First number of height n in Recamán's sequence A005132. A64290

Number of ways to place 5 nonattacking knights on an n X n toroidal board. A172532