Properties of the Number 64387

Sixty-Four Thousand Three Hundred Eighty-Seven

Basics

Value: 64386 → 64387 → 64388

Parity: odd

Prime: No

Previous Prime: 64381

Next Prime: 64399

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 31 ² × 67

Divisors: 1, 31, 67, 961, 2077, 64387

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 1111101110000011

Octal: 175603

Duodecimal: 31317

Hexadecimal: fb83

Square: 4145685769

Square Root: 253.74593592804595

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

Smallest value of·such that x² + y² = P, where P is the product of the first n primes of the form 4k + 1, and 0 < x < y. A236381

Gaps of 2 in sequence A038593 (upper terms). A38644

Concatenation of n in base 2 up to base 10 and n in base 10 down to base 2 is prime, all numbers are interpreted as decimals. A54258

Composite numbers k such that k-1 divides 2^k-2. A330382

a(n) = n²*(2·n + 5). A163683

Numbers n such that 6·10ⁿ+7 is prime. A103026

Variation (2) on Recamán's sequence (A005132): to get a(n), we first try to subtract n from a(n-1): a(n) = a(n-1)-n if positive and not already in the sequence; if not then a(n) = a(n-1)+n+i, where i >= 0 is the smallest number such that a(n-1)+n+i has not already appeared. A64387