7991798 has 8 divisors (see below), whose sum is σ = 12139680. Its totient is φ = 3945240.

The previous prime is 7991779. The next prime is 7991803. The reversal of 7991798 is 8971997.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25133 + ... + 25448.

It is an arithmetic number, because the mean of its divisors is an integer number (1517460).

Almost surely, 2^7991798 is an apocalyptic number.

7991798 is a deficient number, since it is larger than the sum of its proper divisors (4147882).

7991798 is a wasteful number, since it uses less digits than its factorization.

7991798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50662.

The product of its digits is 285768, while the sum is 50.

The square root of 7991798 is about 2826.9768304675. The cubic root of 7991798 is about 199.9316266281.

The spelling of 7991798 in words is "seven million, nine hundred ninety-one thousand, seven hundred ninety-eight".