680188 has 6 divisors (see below), whose sum is σ = 1190336. Its totient is φ = 340092.

The previous prime is 680177. The next prime is 680189. The reversal of 680188 is 881086.

680188 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85020 + ... + 85027.

2⁶⁸⁰¹⁸⁸ is an apocalyptic number.

It is an amenable number.

680188 is a deficient number, since it is larger than the sum of its proper divisors (510148).

680188 is a wasteful number, since it uses less digits than its factorization.

680188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170051 (or 170049 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 680188 is about 824.7351089895. The cubic root of 680188 is about 87.9446966570.

It can be divided in two parts, 6801 and 88, that added together give a square (6889 = 83²).

The spelling of 680188 in words is "six hundred eighty thousand, one hundred eighty-eight".