688003788740 has 12 divisors (see below), whose sum is σ = 1444807956396. Its totient is φ = 275201515488.

The previous prime is 688003788727. The next prime is 688003788803. The reversal of 688003788740 is 47887300886.

It can be written as a sum of positive squares in 2 ways, for example, as 203718627904 + 484285160836 = 451352^2 + 695906^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 688003788740.

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, 17200094699 + ... + 17200094738.

It is an arithmetic number, because the mean of its divisors is an integer number (120400663033).

Almost surely, 2^688003788740 is an apocalyptic number.

It is an amenable number.

688003788740 is an abundant number, since it is smaller than the sum of its proper divisors (756804167656).

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

688003788740 is a wasteful number, since it uses less digits than its factorization.

688003788740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34400189446 (or 34400189444 counting only the distinct ones).

The product of its (nonzero) digits is 14450688, while the sum is 59.

The spelling of 688003788740 in words is "six hundred eighty-eight billion, three million, seven hundred eighty-eight thousand, seven hundred forty".