68685658686 has 24 divisors (see below), whose sum is σ = 150491053440. Its totient is φ = 22637969376.

The previous prime is 68685658607. The next prime is 68685658703.

68685658686 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21435870 + ... + 21439073.

It is an arithmetic number, because the mean of its divisors is an integer number (6270460560).

Almost surely, 2^68685658686 is an apocalyptic number.

68685658686 is an abundant number, since it is smaller than the sum of its proper divisors (81805394754).

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

68685658686 is a wasteful number, since it uses less digits than its factorization.

68685658686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42875040 (or 42875037 counting only the distinct ones).

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

The spelling of 68685658686 in words is "sixty-eight billion, six hundred eighty-five million, six hundred fifty-eight thousand, six hundred eighty-six".