6876391 has 4 divisors (see below), whose sum is σ = 6993000. Its totient is φ = 6759784.

The previous prime is 6876377. The next prime is 6876403. The reversal of 6876391 is 1936786.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6876391 - 2⁷ = 6876263 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6876361) 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, 58216 + ... + 58333.

It is an arithmetic number, because the mean of its divisors is an integer number (1748250).

Almost surely, 2^6876391 is an apocalyptic number.

6876391 is a deficient number, since it is larger than the sum of its proper divisors (116609).

6876391 is a wasteful number, since it uses less digits than its factorization.

6876391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116608.

The product of its digits is 54432, while the sum is 40.

The square root of 6876391 is about 2622.2873603021. The cubic root of 6876391 is about 190.1604461899.

The spelling of 6876391 in words is "six million, eight hundred seventy-six thousand, three hundred ninety-one".