68667876686 has 4 divisors (see below), whose sum is σ = 103001815032. Its totient is φ = 34333938342.

The previous prime is 68667876679. The next prime is 68667876721.

68667876686 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17166969170 + ... + 17166969173.

It is an arithmetic number, because the mean of its divisors is an integer number (25750453758).

Almost surely, 2^68667876686 is an apocalyptic number.

68667876686 is a deficient number, since it is larger than the sum of its proper divisors (34333938346).

68667876686 is a wasteful number, since it uses less digits than its factorization.

68667876686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34333938345.

The product of its digits is 1170505728, while the sum is 74.

The spelling of 68667876686 in words is "sixty-eight billion, six hundred sixty-seven million, eight hundred seventy-six thousand, six hundred eighty-six".