688120 has 16 divisors (see below), whose sum is σ = 1548360. Its totient is φ = 275232.

The previous prime is 688111. The next prime is 688133. The reversal of 688120 is 21886.

It is a congruent number.

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, 8562 + ... + 8641.

2⁶⁸⁸¹²⁰ is an apocalyptic number.

It is an amenable number.

688120 is an abundant number, since it is smaller than the sum of its proper divisors (860240).

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

688120 is a wasteful number, since it uses less digits than its factorization.

688120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17214 (or 17210 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 688120 is about 829.5299874025. The cubic root of 688120 is about 88.2852315144.

It can be divided in two parts, 688 and 120, that added together give a palindrome (808).

The spelling of 688120 in words is "six hundred eighty-eight thousand, one hundred twenty".