68658685686 has 12 divisors (see below), whose sum is σ = 148760485692. Its totient is φ = 22886228556.

The previous prime is 68658685663. The next prime is 68658685721.

68658685686 is a `hidden beast` number, since 6 + 8 + 6 + 58 + 6 + 8 + 568 + 6 = 666.

68658685686 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1907185696 + ... + 1907185731.

It is an arithmetic number, because the mean of its divisors is an integer number (12396707141).

Almost surely, 2^68658685686 is an apocalyptic number.

68658685686 is an abundant number, since it is smaller than the sum of its proper divisors (80101800006).

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

68658685686 is a wasteful number, since it uses less digits than its factorization.

68658685686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3814371435 (or 3814371432 counting only the distinct ones).

The product of its digits is 796262400, while the sum is 72.

The spelling of 68658685686 in words is "sixty-eight billion, six hundred fifty-eight million, six hundred eighty-five thousand, six hundred eighty-six".