800865008 has 40 divisors (see below), whose sum is σ = 1574899200. Its totient is φ = 394468544.

The previous prime is 800865001. The next prime is 800865047. The reversal of 800865008 is 800568008.

It is a super-2 number, since 2×800865008² = 1282769522077680128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800865001) 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, 635483 + ... + 636741.

It is an arithmetic number, because the mean of its divisors is an integer number (39372480).

Almost surely, 2^800865008 is an apocalyptic number.

It is an amenable number.

800865008 is a deficient number, since it is larger than the sum of its proper divisors (774034192).

800865008 is a wasteful number, since it uses less digits than its factorization.

800865008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1829 (or 1823 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 800865008 is about 28299.5584417849. The cubic root of 800865008 is about 928.6522304936.

The spelling of 800865008 in words is "eight hundred million, eight hundred sixty-five thousand, eight".