688069317630 has 32 divisors (see below), whose sum is σ = 1655403962400. Its totient is φ = 183036529152.

The previous prime is 688069317613. The next prime is 688069317701. The reversal of 688069317630 is 36713960886.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28026415 + ... + 28050954.

It is an arithmetic number, because the mean of its divisors is an integer number (51731373825).

Almost surely, 2^688069317630 is an apocalyptic number.

688069317630 is an abundant number, since it is smaller than the sum of its proper divisors (967334644770).

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

688069317630 is a wasteful number, since it uses less digits than its factorization.

688069317630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56077788.

The product of its (nonzero) digits is 7838208, while the sum is 57.

The spelling of 688069317630 in words is "six hundred eighty-eight billion, sixty-nine million, three hundred seventeen thousand, six hundred thirty".