6878817264 has 80 divisors (see below), whose sum is σ = 19396615680. Its totient is φ = 2083322880.

The previous prime is 6878817259. The next prime is 6878817269. The reversal of 6878817264 is 4627188786.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6878817259) and next prime (6878817269).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6878817269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1644744 + ... + 1648920.

It is an arithmetic number, because the mean of its divisors is an integer number (242457696).

Almost surely, 2^6878817264 is an apocalyptic number.

It is an amenable number.

6878817264 is an abundant number, since it is smaller than the sum of its proper divisors (12517798416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6878817264 is a wasteful number, since it uses less digits than its factorization.

6878817264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7318 (or 7312 counting only the distinct ones).

The product of its digits is 7225344, while the sum is 57.

The square root of 6878817264 is about 82938.6355325430. The cubic root of 6878817264 is about 1901.8280894734.

The spelling of 6878817264 in words is "six billion, eight hundred seventy-eight million, eight hundred seventeen thousand, two hundred sixty-four".