799568640 has 432 divisors, whose sum is σ = 3147187680. Its totient is φ = 185794560.

The previous prime is 799568639. The next prime is 799568669. The reversal of 799568640 is 46865997.

799568640 is a `hidden beast` number, since 79 + 9 + 568 + 6 + 4 + 0 = 666.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 2845300 + ... + 2845580.

Almost surely, 2^799568640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 799568640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1573593840).

799568640 is an abundant number, since it is smaller than the sum of its proper divisors (2347619040).

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

799568640 is a wasteful number, since it uses less digits than its factorization.

799568640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The square root of 799568640 is about 28276.6447797471. The cubic root of 799568640 is about 928.1508870785.

The spelling of 799568640 in words is "seven hundred ninety-nine million, five hundred sixty-eight thousand, six hundred forty".