813806774 has 16 divisors (see below), whose sum is σ = 1349928720. Its totient is φ = 364844160.

The previous prime is 813806771. The next prime is 813806801. The reversal of 813806774 is 477608318.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813806771) 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 7 ways as a sum of consecutive naturals, for example, 251759 + ... + 254970.

It is an arithmetic number, because the mean of its divisors is an integer number (84370545).

Almost surely, 2^813806774 is an apocalyptic number.

813806774 is a deficient number, since it is larger than the sum of its proper divisors (536121946).

813806774 is a wasteful number, since it uses less digits than its factorization.

813806774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506815.

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 813806774 is about 28527.2987504951. The cubic root of 813806774 is about 933.6277826355.

The spelling of 813806774 in words is "eight hundred thirteen million, eight hundred six thousand, seven hundred seventy-four".