680812 has 12 divisors (see below), whose sum is σ = 1299816. Its totient is φ = 309440.

The previous prime is 680809. The next prime is 680831. The reversal of 680812 is 218086.

680812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7693 + ... + 7780.

It is an arithmetic number, because the mean of its divisors is an integer number (108318).

2⁶⁸⁰⁸¹² is an apocalyptic number.

It is an amenable number.

680812 is a deficient number, since it is larger than the sum of its proper divisors (619004).

680812 is a wasteful number, since it uses less digits than its factorization.

680812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15488 (or 15486 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 680812 is about 825.1133255499. The cubic root of 680812 is about 87.9715817328.

Adding to 680812 its reverse (218086), we get a palindrome (898898).

The spelling of 680812 in words is "six hundred eighty thousand, eight hundred twelve".