878722864 has 20 divisors (see below), whose sum is σ = 1707279120. Its totient is φ = 438134720.

The previous prime is 878722847. The next prime is 878722883. The reversal of 878722864 is 468227878.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70747 + ... + 82234.

It is an arithmetic number, because the mean of its divisors is an integer number (85363956).

Almost surely, 2^878722864 is an apocalyptic number.

It is an amenable number.

878722864 is a deficient number, since it is larger than the sum of its proper divisors (828556256).

878722864 is a wasteful number, since it uses less digits than its factorization.

878722864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153348 (or 153342 counting only the distinct ones).

The product of its digits is 2408448, while the sum is 52.

The square root of 878722864 is about 29643.2600096548. The cubic root of 878722864 is about 957.8201640283.

The spelling of 878722864 in words is "eight hundred seventy-eight million, seven hundred twenty-two thousand, eight hundred sixty-four".