688578875886 has 64 divisors (see below), whose sum is σ = 1620741540096. Its totient is φ = 192680716800.

The previous prime is 688578875861. The next prime is 688578875891.

688578875886 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 688578875799 and 688578875808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5730220 + ... + 5849151.

It is an arithmetic number, because the mean of its divisors is an integer number (25324086564).

Almost surely, 2^688578875886 is an apocalyptic number.

688578875886 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

688578875886 is an abundant number, since it is smaller than the sum of its proper divisors (932162664210).

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

688578875886 is a wasteful number, since it uses less digits than its factorization.

688578875886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11579457.

The product of its digits is 11560550400, while the sum is 84.

The spelling of 688578875886 in words is "six hundred eighty-eight billion, five hundred seventy-eight million, eight hundred seventy-five thousand, eight hundred eighty-six".