878564 has 12 divisors (see below), whose sum is σ = 1545600. Its totient is φ = 436968.

The previous prime is 878551. The next prime is 878567. The reversal of 878564 is 465878.

It is not an unprimeable number, because it can be changed into a prime (878567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 497 + ... + 1415.

It is an arithmetic number, because the mean of its divisors is an integer number (128800).

2⁸⁷⁸⁵⁶⁴ is an apocalyptic number.

It is an amenable number.

878564 is a deficient number, since it is larger than the sum of its proper divisors (667036).

878564 is a wasteful number, since it uses less digits than its factorization.

878564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162 (or 1160 counting only the distinct ones).

The product of its digits is 53760, while the sum is 38.

The square root of 878564 is about 937.3174488934. The cubic root of 878564 is about 95.7762439225.

Subtracting from 878564 its reverse (465878), we obtain a triangular number (412686 = T₉₀₈).

The spelling of 878564 in words is "eight hundred seventy-eight thousand, five hundred sixty-four".