878634 has 32 divisors (see below), whose sum is σ = 1995840. Its totient is φ = 286416.

The previous prime is 878629. The next prime is 878641. The reversal of 878634 is 436878.

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, 2709 + ... + 3015.

It is an arithmetic number, because the mean of its divisors is an integer number (62370).

2⁸⁷⁸⁶³⁴ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 878634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (997920).

878634 is an abundant number, since it is smaller than the sum of its proper divisors (1117206).

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

878634 is a wasteful number, since it uses less digits than its factorization.

878634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371 (or 365 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 878634 is about 937.3547887540. The cubic root of 878634 is about 95.7787875274.

The spelling of 878634 in words is "eight hundred seventy-eight thousand, six hundred thirty-four".