68968978 has 16 divisors (see below), whose sum is σ = 111625920. Its totient is φ = 31770576.

The previous prime is 68968969. The next prime is 68968981. The reversal of 68968978 is 87986986.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13003 + ... + 17521.

It is an arithmetic number, because the mean of its divisors is an integer number (6976620).

Almost surely, 2^68968978 is an apocalyptic number.

68968978 is a deficient number, since it is larger than the sum of its proper divisors (42656942).

68968978 is a wasteful number, since it uses less digits than its factorization.

68968978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5121.

The product of its digits is 10450944, while the sum is 61.

The square root of 68968978 is about 8304.7563480213. The cubic root of 68968978 is about 410.0951157472.

The spelling of 68968978 in words is "sixty-eight million, nine hundred sixty-eight thousand, nine hundred seventy-eight".