978868 has 12 divisors (see below), whose sum is σ = 1868832. Its totient is φ = 444920.

The previous prime is 978863. The next prime is 978871. The reversal of 978868 is 868879.

It is a super-2 number, since 2×978868² = 1916365122848, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978863) by changing a digit.

978868 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11080 + ... + 11167.

It is an arithmetic number, because the mean of its divisors is an integer number (155736).

2⁹⁷⁸⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

978868 is a deficient number, since it is larger than the sum of its proper divisors (889964).

978868 is a wasteful number, since it uses less digits than its factorization.

978868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22262 (or 22260 counting only the distinct ones).

The product of its digits is 193536, while the sum is 46.

The square root of 978868 is about 989.3775821192. The cubic root of 978868 is about 99.2905791214.

The spelling of 978868 in words is "nine hundred seventy-eight thousand, eight hundred sixty-eight".