68678287686 has 24 divisors (see below), whose sum is σ = 149108525904. Its totient is φ = 22845751920.

The previous prime is 68678287679. The next prime is 68678287687.

68678287686 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68678287687) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3908545 + ... + 3926076.

It is an arithmetic number, because the mean of its divisors is an integer number (6212855246).

Almost surely, 2^68678287686 is an apocalyptic number.

68678287686 is an abundant number, since it is smaller than the sum of its proper divisors (80430238218).

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

68678287686 is a wasteful number, since it uses less digits than its factorization.

68678287686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7835116 (or 7835113 counting only the distinct ones).

The product of its digits is 520224768, while the sum is 72.

The spelling of 68678287686 in words is "sixty-eight billion, six hundred seventy-eight million, two hundred eighty-seven thousand, six hundred eighty-six".