811694872 has 16 divisors (see below), whose sum is σ = 1525449240. Its totient is φ = 404908416.

The previous prime is 811694861. The next prime is 811694879. The reversal of 811694872 is 278496118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811694879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113698 + ... + 120625.

Almost surely, 2^811694872 is an apocalyptic number.

It is an amenable number.

811694872 is a deficient number, since it is larger than the sum of its proper divisors (713754368).

811694872 is a wasteful number, since it uses less digits than its factorization.

811694872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234762 (or 234758 counting only the distinct ones).

The product of its digits is 193536, while the sum is 46.

The square root of 811694872 is about 28490.2592476797. The cubic root of 811694872 is about 932.8194669051.

The spelling of 811694872 in words is "eight hundred eleven million, six hundred ninety-four thousand, eight hundred seventy-two".