878584 has 32 divisors (see below), whose sum is σ = 1951200. Its totient is φ = 362880.

The previous prime is 878573. The next prime is 878593. The reversal of 878584 is 485878.

It is a congruent number.

It is an unprimeable number.

878584 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 7 ways as a sum of consecutive naturals, for example, 1354 + ... + 1894.

It is an arithmetic number, because the mean of its divisors is an integer number (60975).

2⁸⁷⁸⁵⁸⁴ 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 878584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (975600).

878584 is an abundant number, since it is smaller than the sum of its proper divisors (1072616).

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

878584 is a wasteful number, since it uses less digits than its factorization.

878584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583 (or 579 counting only the distinct ones).

The product of its digits is 71680, while the sum is 40.

The square root of 878584 is about 937.3281175768. The cubic root of 878584 is about 95.7769706805.

The spelling of 878584 in words is "eight hundred seventy-eight thousand, five hundred eighty-four".