799565820 has 24 divisors (see below), whose sum is σ = 2238784464. Its totient is φ = 213217536.

The previous prime is 799565797. The next prime is 799565821. The reversal of 799565820 is 28565997.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (799565821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6662989 + ... + 6663108.

It is an arithmetic number, because the mean of its divisors is an integer number (93282686).

Almost surely, 2^799565820 is an apocalyptic number.

It is an amenable number.

799565820 is an abundant number, since it is smaller than the sum of its proper divisors (1439218644).

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

799565820 is a wasteful number, since it uses less digits than its factorization.

799565820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13326109 (or 13326107 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 51.

The square root of 799565820 is about 28276.5949152298. The cubic root of 799565820 is about 928.1497959116.

The spelling of 799565820 in words is "seven hundred ninety-nine million, five hundred sixty-five thousand, eight hundred twenty".