680788 has 6 divisors (see below), whose sum is σ = 1191386. Its totient is φ = 340392.

The previous prime is 680783. The next prime is 680803. The reversal of 680788 is 887086.

It can be written as a sum of positive squares in only one way, i.e., 669124 + 11664 = 818^2 + 108^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85095 + ... + 85102.

2⁶⁸⁰⁷⁸⁸ is an apocalyptic number.

It is an amenable number.

680788 is a deficient number, since it is larger than the sum of its proper divisors (510598).

680788 is a wasteful number, since it uses less digits than its factorization.

680788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170201 (or 170199 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 680788 is about 825.0987819649. The cubic root of 680788 is about 87.9705479953.

It can be divided in two parts, 68078 and 8, that added together give a palindrome (68086).

The spelling of 680788 in words is "six hundred eighty thousand, seven hundred eighty-eight".