680612 has 12 divisors (see below), whose sum is σ = 1261260. Its totient is φ = 320256.

The previous prime is 680611. The next prime is 680623. The reversal of 680612 is 216086.

It can be written as a sum of positive squares in 2 ways, for example, as 630436 + 50176 = 794^2 + 224^2 .

680612 is a modest number, since divided by 612 gives 68 as remainder.

It is not an unprimeable number, because it can be changed into a prime (680611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4937 + ... + 5072.

It is an arithmetic number, because the mean of its divisors is an integer number (105105).

2⁶⁸⁰⁶¹² is an apocalyptic number.

It is an amenable number.

680612 is a deficient number, since it is larger than the sum of its proper divisors (580648).

680612 is a wasteful number, since it uses less digits than its factorization.

680612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10030 (or 10028 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 680612 is about 824.9921211745. The cubic root of 680612 is about 87.9629665109.

Adding to 680612 its reverse (216086), we get a palindrome (896698).

The spelling of 680612 in words is "six hundred eighty thousand, six hundred twelve".