878864 has 60 divisors (see below), whose sum is σ = 2120400. Its totient is φ = 350784.

The previous prime is 878863. The next prime is 878869. The reversal of 878864 is 468878.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (878863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14867 + ... + 14925.

It is an arithmetic number, because the mean of its divisors is an integer number (35340).

2⁸⁷⁸⁸⁶⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 878864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1060200).

878864 is an abundant number, since it is smaller than the sum of its proper divisors (1241536).

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

878864 is a wasteful number, since it uses less digits than its factorization.

878864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 87 counting only the distinct ones).

The product of its digits is 86016, while the sum is 41.

The square root of 878864 is about 937.4774663959. The cubic root of 878864 is about 95.7871441352.

The spelling of 878864 in words is "eight hundred seventy-eight thousand, eight hundred sixty-four".