164594065 has 4 divisors (see below), whose sum is σ = 197512884. Its totient is φ = 131675248.

The previous prime is 164594041. The next prime is 164594071. The reversal of 164594065 is 560495461.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 56911936 + 107682129 = 7544^2 + 10377^2 .

It is a cyclic number.

It is not a de Polignac number, because 164594065 - 2¹¹ = 164592017 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

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, 16459402 + ... + 16459411.

It is an arithmetic number, because the mean of its divisors is an integer number (49378221).

Almost surely, 2^164594065 is an apocalyptic number.

It is an amenable number.

164594065 is a deficient number, since it is larger than the sum of its proper divisors (32918819).

164594065 is an equidigital number, since it uses as much as digits as its factorization.

164594065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32918818.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 164594065 is about 12829.4218497951. The cubic root of 164594065 is about 548.0304929575.

The spelling of 164594065 in words is "one hundred sixty-four million, five hundred ninety-four thousand, sixty-five".