688148349008 has 20 divisors (see below), whose sum is σ = 1334416410708. Its totient is φ = 343782823680.

The previous prime is 688148348963. The next prime is 688148349017. The reversal of 688148349008 is 800943841886.

It can be written as a sum of positive squares in 2 ways, for example, as 651526637584 + 36621711424 = 807172^2 + 191368^2 .

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 3 ways as a sum of consecutive naturals, for example, 18189941 + ... + 18227732.

Almost surely, 2^688148349008 is an apocalyptic number.

It is an amenable number.

688148349008 is a deficient number, since it is larger than the sum of its proper divisors (646268061700).

688148349008 is a wasteful number, since it uses less digits than its factorization.

688148349008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36418862 (or 36418856 counting only the distinct ones).

The product of its (nonzero) digits is 10616832, while the sum is 59.

The spelling of 688148349008 in words is "six hundred eighty-eight billion, one hundred forty-eight million, three hundred forty-nine thousand, eight".