164105566 has 16 divisors (see below), whose sum is σ = 250162560. Its totient is φ = 80723160.

The previous prime is 164105563. The next prime is 164105567. The reversal of 164105566 is 665501461.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164105561) 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, 86965 + ... + 88831.

It is an arithmetic number, because the mean of its divisors is an integer number (15635160).

Almost surely, 2^164105566 is an apocalyptic number.

164105566 is a deficient number, since it is larger than the sum of its proper divisors (86056994).

164105566 is a wasteful number, since it uses less digits than its factorization.

164105566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2559.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 164105566 is about 12810.3694716429. The cubic root of 164105566 is about 547.4877888341.

The spelling of 164105566 in words is "one hundred sixty-four million, one hundred five thousand, five hundred sixty-six".