784985 has 8 divisors (see below), whose sum is σ = 991680. Its totient is φ = 594864.

The previous prime is 784981. The next prime is 785003. The reversal of 784985 is 589487.

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 784985 - 2² = 784981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (784981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4037 + ... + 4226.

It is an arithmetic number, because the mean of its divisors is an integer number (123960).

2⁷⁸⁴⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

784985 is a deficient number, since it is larger than the sum of its proper divisors (206695).

784985 is a wasteful number, since it uses less digits than its factorization.

784985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8287.

The product of its digits is 80640, while the sum is 41.

The square root of 784985 is about 885.9937923033. The cubic root of 784985 is about 92.2473260046.

The spelling of 784985 in words is "seven hundred eighty-four thousand, nine hundred eighty-five".