800799866 has 8 divisors (see below), whose sum is σ = 1201497300. Its totient is φ = 400300768.

The previous prime is 800799847. The next prime is 800799889. The reversal of 800799866 is 668997008.

It can be written as a sum of positive squares in 2 ways, for example, as 800041225 + 758641 = 28285^2 + 871^2 .

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

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, 39041 + ... + 55908.

Almost surely, 2^800799866 is an apocalyptic number.

800799866 is a deficient number, since it is larger than the sum of its proper divisors (400697434).

800799866 is a wasteful number, since it uses less digits than its factorization.

800799866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99168.

The product of its (nonzero) digits is 1306368, while the sum is 53.

The square root of 800799866 is about 28298.4074816941. The cubic root of 800799866 is about 928.6270510924.

The spelling of 800799866 in words is "eight hundred million, seven hundred ninety-nine thousand, eight hundred sixty-six".