798985 has 16 divisors (see below), whose sum is σ = 1065600. Its totient is φ = 570240.

The previous prime is 798961. The next prime is 799003. The reversal of 798985 is 589897.

It is not a de Polignac number, because 798985 - 2¹¹ = 796937 is a prime.

It is an Ulam number.

Its product of digits (181440) is a multiple of the sum of its prime divisors (288).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3916 + ... + 4114.

It is an arithmetic number, because the mean of its divisors is an integer number (66600).

2⁷⁹⁸⁹⁸⁵ is an apocalyptic number.

798985 is the 730-th pentagonal number.

It is an amenable number.

798985 is a deficient number, since it is larger than the sum of its proper divisors (266615).

798985 is a wasteful number, since it uses less digits than its factorization.

798985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288.

The product of its digits is 181440, while the sum is 46.

The square root of 798985 is about 893.8596086635. The cubic root of 798985 is about 92.7924999512.

The spelling of 798985 in words is "seven hundred ninety-eight thousand, nine hundred eighty-five".