680518 has 16 divisors (see below), whose sum is σ = 1075536. Its totient is φ = 322560.

The previous prime is 680509. The next prime is 680531. The reversal of 680518 is 815086.

It is a happy number.

It is a plaindrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3430 + ... + 3622.

It is an arithmetic number, because the mean of its divisors is an integer number (67221).

2⁶⁸⁰⁵¹⁸ is an apocalyptic number.

680518 is a deficient number, since it is larger than the sum of its proper divisors (395018).

680518 is a wasteful number, since it uses less digits than its factorization.

680518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 680518 is about 824.9351489663. The cubic root of 680518 is about 87.9589167735.

The spelling of 680518 in words is "six hundred eighty thousand, five hundred eighteen".