68816986 has 32 divisors (see below), whose sum is σ = 125625600. Its totient is φ = 27599616.

The previous prime is 68816953. The next prime is 68816999. The reversal of 68816986 is 68961886.

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, 46636 + ... + 48088.

It is an arithmetic number, because the mean of its divisors is an integer number (3925800).

Almost surely, 2^68816986 is an apocalyptic number.

68816986 is a deficient number, since it is larger than the sum of its proper divisors (56808614).

68816986 is a wasteful number, since it uses less digits than its factorization.

68816986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1678.

The product of its digits is 995328, while the sum is 52.

The square root of 68816986 is about 8295.6004002122. The cubic root of 68816986 is about 409.7936419411.

The spelling of 68816986 in words is "sixty-eight million, eight hundred sixteen thousand, nine hundred eighty-six".