983985 has 8 divisors (see below), whose sum is σ = 1574400. Its totient is φ = 524784.

The previous prime is 983951. The next prime is 983987. The reversal of 983985 is 589389.

983985 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 not a de Polignac number, because 983985 - 2¹² = 979889 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 983985.

It is not an unprimeable number, because it can be changed into a prime (983987) 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, 32785 + ... + 32814.

It is an arithmetic number, because the mean of its divisors is an integer number (196800).

2⁹⁸³⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

983985 is a deficient number, since it is larger than the sum of its proper divisors (590415).

983985 is a wasteful number, since it uses less digits than its factorization.

983985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65607.

The product of its digits is 77760, while the sum is 42.

The square root of 983985 is about 991.9601806524. The cubic root of 983985 is about 99.4632912573.

The spelling of 983985 in words is "nine hundred eighty-three thousand, nine hundred eighty-five".