799864 has 16 divisors (see below), whose sum is σ = 1615320. Its totient is φ = 369120.

The previous prime is 799859. The next prime is 799873. The reversal of 799864 is 468997.

It is a self number, because there is not a number n which added to its sum of digits gives 799864.

It is a congruent number.

It is an unprimeable number.

799864 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3742 + ... + 3949.

2⁷⁹⁹⁸⁶⁴ is an apocalyptic number.

It is an amenable number.

799864 is an abundant number, since it is smaller than the sum of its proper divisors (815456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

799864 is a wasteful number, since it uses less digits than its factorization.

799864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7710 (or 7706 counting only the distinct ones).

The product of its digits is 108864, while the sum is 43.

The square root of 799864 is about 894.3511614573. The cubic root of 799864 is about 92.8265159068.

The spelling of 799864 in words is "seven hundred ninety-nine thousand, eight hundred sixty-four".