6317891 has 4 divisors (see below), whose sum is σ = 6323112. Its totient is φ = 6312672.

The previous prime is 6317887. The next prime is 6317923. The reversal of 6317891 is 1987136.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6317891 - 2² = 6317887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6317821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251 + ... + 3563.

It is an arithmetic number, because the mean of its divisors is an integer number (1580778).

Almost surely, 2^6317891 is an apocalyptic number.

6317891 is a deficient number, since it is larger than the sum of its proper divisors (5221).

6317891 is a wasteful number, since it uses less digits than its factorization.

6317891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5220.

The product of its digits is 9072, while the sum is 35.

The square root of 6317891 is about 2513.5415254179. The cubic root of 6317891 is about 184.8661412985.

The spelling of 6317891 in words is "six million, three hundred seventeen thousand, eight hundred ninety-one".