68656986 has 24 divisors (see below), whose sum is σ = 149086080. Its totient is φ = 22835016.

The previous prime is 68656957. The next prime is 68656993. The reversal of 68656986 is 68965686.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4641 + ... + 12603.

It is an arithmetic number, because the mean of its divisors is an integer number (6211920).

Almost surely, 2^68656986 is an apocalyptic number.

68656986 is an abundant number, since it is smaller than the sum of its proper divisors (80429094).

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

68656986 is a wasteful number, since it uses less digits than its factorization.

68656986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8450 (or 8447 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The square root of 68656986 is about 8285.9511222309. The cubic root of 68656986 is about 409.4758044089.

The spelling of 68656986 in words is "sixty-eight million, six hundred fifty-six thousand, nine hundred eighty-six".