683985 has 8 divisors (see below), whose sum is σ = 1094400. Its totient is φ = 364784.

The previous prime is 683983. The next prime is 684007. The reversal of 683985 is 589386.

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

It is a cyclic number.

It is not a de Polignac number, because 683985 - 2¹ = 683983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (683983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22785 + ... + 22814.

It is an arithmetic number, because the mean of its divisors is an integer number (136800).

2⁶⁸³⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

683985 is a deficient number, since it is larger than the sum of its proper divisors (410415).

683985 is a wasteful number, since it uses less digits than its factorization.

683985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45607.

The product of its digits is 51840, while the sum is 39.

The square root of 683985 is about 827.0338566226. The cubic root of 683985 is about 88.1080370751.

The spelling of 683985 in words is "six hundred eighty-three thousand, nine hundred eighty-five".