805605164 has 24 divisors (see below), whose sum is σ = 1735150368. Its totient is φ = 318700800.

The previous prime is 805605139. The next prime is 805605167. The reversal of 805605164 is 461506508.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (805605167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1106237 + ... + 1106964.

It is an arithmetic number, because the mean of its divisors is an integer number (72297932).

Almost surely, 2^805605164 is an apocalyptic number.

It is an amenable number.

805605164 is an abundant number, since it is smaller than the sum of its proper divisors (929545204).

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

805605164 is a wasteful number, since it uses less digits than its factorization.

805605164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2213225 (or 2213223 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 805605164 is about 28383.1845288720. The cubic root of 805605164 is about 930.4807950598.

The spelling of 805605164 in words is "eight hundred five million, six hundred five thousand, one hundred sixty-four".