6878591 has 8 divisors (see below), whose sum is σ = 7439040. Its totient is φ = 6335488.

The previous prime is 6878579. The next prime is 6878593. The reversal of 6878591 is 1958786.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6878591 - 2⁶ = 6878527 is a prime.

It is an Ulam 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 (6878593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3506 + ... + 5103.

It is an arithmetic number, because the mean of its divisors is an integer number (929880).

Almost surely, 2^6878591 is an apocalyptic number.

6878591 is a deficient number, since it is larger than the sum of its proper divisors (560449).

6878591 is a wasteful number, since it uses less digits than its factorization.

6878591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8673.

The product of its digits is 120960, while the sum is 44.

The square root of 6878591 is about 2622.7068078609. The cubic root of 6878591 is about 190.1807237054.

The spelling of 6878591 in words is "six million, eight hundred seventy-eight thousand, five hundred ninety-one".