799904656 has 40 divisors (see below), whose sum is σ = 1633895424. Its totient is φ = 378804480.

The previous prime is 799904653. The next prime is 799904657. The reversal of 799904656 is 656409997.

It is a junction number, because it is equal to n+sod(n) for n = 799904597 and 799904606.

It is not an unprimeable number, because it can be changed into a prime (799904653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6156 + ... + 40468.

Almost surely, 2^799904656 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 799904656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (816947712).

799904656 is an abundant number, since it is smaller than the sum of its proper divisors (833990768).

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

799904656 is a wasteful number, since it uses less digits than its factorization.

799904656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34399 (or 34393 counting only the distinct ones).

The product of its (nonzero) digits is 3674160, while the sum is 55.

The square root of 799904656 is about 28282.5857375170. The cubic root of 799904656 is about 928.2808862869.

The spelling of 799904656 in words is "seven hundred ninety-nine million, nine hundred four thousand, six hundred fifty-six".