683680 has 24 divisors (see below), whose sum is σ = 1615572. Its totient is φ = 273408.

The previous prime is 683653. The next prime is 683681. The reversal of 683680 is 86386.

It can be written as a sum of positive squares in 2 ways, for example, as 659344 + 24336 = 812^2 + 156^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (683681) by changing a digit.

683680 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1977 + ... + 2296.

2⁶⁸³⁶⁸⁰ is an apocalyptic number.

It is an amenable number.

683680 is an abundant number, since it is smaller than the sum of its proper divisors (931892).

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

683680 is a wasteful number, since it uses less digits than its factorization.

683680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4288 (or 4280 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 683680 is about 826.8494421598. The cubic root of 683680 is about 88.0949388606.

The spelling of 683680 in words is "six hundred eighty-three thousand, six hundred eighty".