683666 has 8 divisors (see below), whose sum is σ = 1038720. Its totient is φ = 337428.

The previous prime is 683653. The next prime is 683681. The reversal of 683666 is 666386.

683666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 2006 + ... + 2321.

It is an arithmetic number, because the mean of its divisors is an integer number (129840).

2⁶⁸³⁶⁶⁶ is an apocalyptic number.

683666 is a deficient number, since it is larger than the sum of its proper divisors (355054).

683666 is a wasteful number, since it uses less digits than its factorization.

683666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4408.

The product of its digits is 31104, while the sum is 35.

The square root of 683666 is about 826.8409762463. The cubic root of 683666 is about 88.0943375376.

The spelling of 683666 in words is "six hundred eighty-three thousand, six hundred sixty-six".