688852112 has 30 divisors (see below), whose sum is σ = 1445219442. Its totient is φ = 317930496.

The previous prime is 688852061. The next prime is 688852117. The reversal of 688852112 is 211258886.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 32672656 + 656179456 = 5716^2 + 25616^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 688852112.

It is not an unprimeable number, because it can be changed into a prime (688852117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 124673 + ... + 130080.

Almost surely, 2^688852112 is an apocalyptic number.

It is an amenable number.

688852112 is an abundant number, since it is smaller than the sum of its proper divisors (756367330).

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

688852112 is a wasteful number, since it uses less digits than its factorization.

688852112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254787 (or 254768 counting only the distinct ones).

The product of its digits is 61440, while the sum is 41.

The square root of 688852112 is about 26245.9923035880. The cubic root of 688852112 is about 883.1653020679.

The spelling of 688852112 in words is "six hundred eighty-eight million, eight hundred fifty-two thousand, one hundred twelve".