68866666886 has 32 divisors (see below), whose sum is σ = 105643984320. Its totient is φ = 33661495296.

The previous prime is 68866666871. The next prime is 68866666889.

68866666886 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 (68866666889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30784160 + ... + 30786396.

It is an arithmetic number, because the mean of its divisors is an integer number (3301374510).

Almost surely, 2^68866666886 is an apocalyptic number.

68866666886 is a deficient number, since it is larger than the sum of its proper divisors (36777317434).

68866666886 is a wasteful number, since it uses less digits than its factorization.

68866666886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4208.

The product of its digits is 1146617856, while the sum is 74.

The spelling of 68866666886 in words is "sixty-eight billion, eight hundred sixty-six million, six hundred sixty-six thousand, eight hundred eighty-six".