878978 has 8 divisors (see below), whose sum is σ = 1387920. Its totient is φ = 416340.

The previous prime is 878957. The next prime is 878987. The reversal of 878978 is 879878.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11528 + ... + 11603.

It is an arithmetic number, because the mean of its divisors is an integer number (173490).

2⁸⁷⁸⁹⁷⁸ is an apocalyptic number.

878978 is a deficient number, since it is larger than the sum of its proper divisors (508942).

878978 is a wasteful number, since it uses less digits than its factorization.

878978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23152.

The product of its digits is 225792, while the sum is 47.

The square root of 878978 is about 937.5382658857. The cubic root of 878978 is about 95.7912855656.

Subtracting 878978 from its reverse (879878), we obtain a square (900 = 30²).

The spelling of 878978 in words is "eight hundred seventy-eight thousand, nine hundred seventy-eight".