799688736 has 144 divisors (see below), whose sum is σ = 2835338688. Its totient is φ = 207705600.

The previous prime is 799688719. The next prime is 799688749. The reversal of 799688736 is 637886997.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4146 + ... + 40206.

It is an arithmetic number, because the mean of its divisors is an integer number (19689852).

Almost surely, 2^799688736 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 799688736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1417669344).

799688736 is an abundant number, since it is smaller than the sum of its proper divisors (2035649952).

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

799688736 is a wasteful number, since it uses less digits than its factorization.

799688736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36095 (or 36084 counting only the distinct ones).

The product of its digits is 27433728, while the sum is 63.

The square root of 799688736 is about 28278.7682900087. The cubic root of 799688736 is about 928.1973544790.

The spelling of 799688736 in words is "seven hundred ninety-nine million, six hundred eighty-eight thousand, seven hundred thirty-six".