688125573990 has 64 divisors (see below), whose sum is σ = 1835107600320. Its totient is φ = 183489546240.

The previous prime is 688125573983. The next prime is 688125574039. The reversal of 688125573990 is 99375521886.

688125573990 is a `hidden beast` number, since 68 + 8 + 12 + 557 + 3 + 9 + 9 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5342022 + ... + 5469318.

It is an arithmetic number, because the mean of its divisors is an integer number (28673556255).

Almost surely, 2^688125573990 is an apocalyptic number.

688125573990 is an abundant number, since it is smaller than the sum of its proper divisors (1146982026330).

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

688125573990 is a wasteful number, since it uses less digits than its factorization.

688125573990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147334 (or 147328 counting only the distinct ones).

The product of its (nonzero) digits is 32659200, while the sum is 63.

The spelling of 688125573990 in words is "six hundred eighty-eight billion, one hundred twenty-five million, five hundred seventy-three thousand, nine hundred ninety".