688881426432 has 56 divisors (see below), whose sum is σ = 1836905080056. Its totient is φ = 229627133952.

The previous prime is 688881426403. The next prime is 688881426461. The reversal of 688881426432 is 234624188886.

It is an interprime number because it is at equal distance from previous prime (688881426403) and next prime (688881426461).

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13990753 + ... + 14039904.

Almost surely, 2^688881426432 is an apocalyptic number.

It is an amenable number.

688881426432 is an abundant number, since it is smaller than the sum of its proper divisors (1148023653624).

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

688881426432 is an equidigital number, since it uses as much as digits as its factorization.

688881426432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28030686 (or 28030662 counting only the distinct ones).

The product of its digits is 28311552, while the sum is 60.

The spelling of 688881426432 in words is "six hundred eighty-eight billion, eight hundred eighty-one million, four hundred twenty-six thousand, four hundred thirty-two".