680600 has 48 divisors (see below), whose sum is σ = 1640520. Its totient is φ = 262400.

The previous prime is 680597. The next prime is 680611. The reversal of 680600 is 6086.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8159 + ... + 8241.

2⁶⁸⁰⁶⁰⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 680600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (820260).

680600 is an abundant number, since it is smaller than the sum of its proper divisors (959920).

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

680600 is a wasteful number, since it uses less digits than its factorization.

680600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 680600 is about 824.9848483457. The cubic root of 680600 is about 87.9624495439.

Adding to 680600 its reverse (6086), we get a palindrome (686686).

The spelling of 680600 in words is "six hundred eighty thousand, six hundred".