813604568 has 32 divisors (see below), whose sum is σ = 1765516800. Its totient is φ = 344272032.

The previous prime is 813604543. The next prime is 813604607. The reversal of 813604568 is 865406318.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87530 + ... + 96377.

It is an arithmetic number, because the mean of its divisors is an integer number (55172400).

Almost surely, 2^813604568 is an apocalyptic number.

It is an amenable number.

813604568 is an abundant number, since it is smaller than the sum of its proper divisors (951912232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

813604568 is a wasteful number, since it uses less digits than its factorization.

813604568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183999 (or 183995 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 813604568 is about 28523.7544513341. The cubic root of 813604568 is about 933.5504502828.

The spelling of 813604568 in words is "eight hundred thirteen million, six hundred four thousand, five hundred sixty-eight".