878686878 has 32 divisors (see below), whose sum is σ = 1863106560. Its totient is φ = 275784480.

The previous prime is 878686829. The next prime is 878686903.

It is a happy number.

878686878 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56958 + ... + 70721.

It is an arithmetic number, because the mean of its divisors is an integer number (58222080).

Almost surely, 2^878686878 is an apocalyptic number.

878686878 is an abundant number, since it is smaller than the sum of its proper divisors (984419682).

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

878686878 is a wasteful number, since it uses less digits than its factorization.

878686878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127752.

The product of its digits is 57802752, while the sum is 66.

The square root of 878686878 is about 29642.6530189185. The cubic root of 878686878 is about 957.8070887694.

The spelling of 878686878 in words is "eight hundred seventy-eight million, six hundred eighty-six thousand, eight hundred seventy-eight".