799296661 has 4 divisors (see below), whose sum is σ = 799353324. Its totient is φ = 799240000.

The previous prime is 799296623. The next prime is 799296679. The reversal of 799296661 is 166692997.

799296661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 464187025 + 335109636 = 21545^2 + 18306^2 .

It is a cyclic number.

It is not a de Polignac number, because 799296661 - 2¹⁵ = 799263893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (799296601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11421 + ... + 41581.

It is an arithmetic number, because the mean of its divisors is an integer number (199838331).

Almost surely, 2^799296661 is an apocalyptic number.

It is an amenable number.

799296661 is a deficient number, since it is larger than the sum of its proper divisors (56663).

799296661 is a wasteful number, since it uses less digits than its factorization.

799296661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56662.

The product of its digits is 2204496, while the sum is 55.

The square root of 799296661 is about 28271.8351190721. The cubic root of 799296661 is about 928.0456360862.

It can be divided in two parts, 7992 and 96661, that added together give a triangular number (104653 = T₄₅₇).

The spelling of 799296661 in words is "seven hundred ninety-nine million, two hundred ninety-six thousand, six hundred sixty-one".