688867768886 has 32 divisors (see below), whose sum is σ = 1129848480000. Its totient is φ = 312396991200.

The previous prime is 688867768847. The next prime is 688867768889.

688867768886 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 688867768798 and 688867768807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688867768889) 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, 53992820 + ... + 54005576.

It is an arithmetic number, because the mean of its divisors is an integer number (35307765000).

Almost surely, 2^688867768886 is an apocalyptic number.

688867768886 is a deficient number, since it is larger than the sum of its proper divisors (440980711114).

688867768886 is a wasteful number, since it uses less digits than its factorization.

688867768886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18260.

The product of its digits is 16647192576, while the sum is 86.

The spelling of 688867768886 in words is "six hundred eighty-eight billion, eight hundred sixty-seven million, seven hundred sixty-eight thousand, eight hundred eighty-six".