164545565 has 16 divisors (see below), whose sum is σ = 213148800. Its totient is φ = 121568832.

The previous prime is 164545561. The next prime is 164545573. The reversal of 164545565 is 565545461.

164545565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 164545565 - 2² = 164545561 is a prime.

It is a super-3 number, since 3×164545565³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164545561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21335 + ... + 28004.

It is an arithmetic number, because the mean of its divisors is an integer number (13321800).

Almost surely, 2^164545565 is an apocalyptic number.

It is an amenable number.

164545565 is a deficient number, since it is larger than the sum of its proper divisors (48603235).

164545565 is a wasteful number, since it uses less digits than its factorization.

164545565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49396.

The product of its digits is 360000, while the sum is 41.

The square root of 164545565 is about 12827.5315240306. The cubic root of 164545565 is about 547.9766593234.

The spelling of 164545565 in words is "one hundred sixty-four million, five hundred forty-five thousand, five hundred sixty-five".