6391

6391 is a positive integer. In mathematics, it is notable as the product of three distinct primes: 7, 11, and 83.

Its prime factorization is 6391 = 7 × 11 × 83, and it has eight positive divisors: 1, 7, 11, 77, 83, 581, 913, and 6391. The number is square-free and odd.

The sum of its proper divisors is 1673, which is less than 6391, so 6391 is a deficient number. Because its prime exponents are all one, the divisor count is (1+1)^3 = 8.

A binary representation of 6391 is 1100011110111. In decimal form, the number is written as six thousand three hundred ninety-one.