878668 has 18 divisors (see below), whose sum is σ = 1789116. Its totient is φ = 376488.

The previous prime is 878663. The next prime is 878677. The reversal of 878668 is 866878.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (878663) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2046 + ... + 2437.

2⁸⁷⁸⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

878668 is an abundant number, since it is smaller than the sum of its proper divisors (910448).

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

878668 is a wasteful number, since it uses less digits than its factorization.

878668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4501 (or 4492 counting only the distinct ones).

The product of its digits is 129024, while the sum is 43.

The square root of 878668 is about 937.3729247210. The cubic root of 878668 is about 95.7800229439.

The spelling of 878668 in words is "eight hundred seventy-eight thousand, six hundred sixty-eight".