688991060304 has 120 divisors (see below), whose sum is σ = 1948736147904. Its totient is φ = 227232000000.

The previous prime is 688991060297. The next prime is 688991060327. The reversal of 688991060304 is 403060199886.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5394624 + ... + 5520864.

Almost surely, 2^688991060304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 688991060304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (974368073952).

688991060304 is an abundant number, since it is smaller than the sum of its proper divisors (1259745087600).

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

688991060304 is a wasteful number, since it uses less digits than its factorization.

688991060304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126657 (or 126648 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The spelling of 688991060304 in words is "six hundred eighty-eight billion, nine hundred ninety-one million, sixty thousand, three hundred four".