680500 has 24 divisors (see below), whose sum is σ = 1487304. Its totient is φ = 272000.

The previous prime is 680489. The next prime is 680503. The reversal of 680500 is 5086.

680500 is nontrivially palindromic in base 9.

It can be written as a sum of positive squares in 4 ways, for example, as 99856 + 580644 = 316^2 + 762^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181 + ... + 1180.

It is an arithmetic number, because the mean of its divisors is an integer number (61971).

2⁶⁸⁰⁵⁰⁰ is an apocalyptic number.

It is an amenable number.

680500 is an abundant number, since it is smaller than the sum of its proper divisors (806804).

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

680500 is a wasteful number, since it uses less digits than its factorization.

680500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380 (or 1368 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 680500 is about 824.9242389456. The cubic root of 680500 is about 87.9581412493.

Adding to 680500 its reverse (5086), we get a palindrome (685586).

The spelling of 680500 in words is "six hundred eighty thousand, five hundred".