164505564 has 36 divisors (see below), whose sum is σ = 416237640. Its totient is φ = 54781920.

The previous prime is 164505557. The next prime is 164505577. The reversal of 164505564 is 465505461.

164505564 is a `hidden beast` number, since 1 + 645 + 0 + 5 + 5 + 6 + 4 = 666.

164505564 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56947 + ... + 59765.

Almost surely, 2^164505564 is an apocalyptic number.

It is an amenable number.

164505564 is an abundant number, since it is smaller than the sum of its proper divisors (251732076).

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

164505564 is a wasteful number, since it uses less digits than its factorization.

164505564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4450 (or 4445 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 164505564 is about 12825.9722438496. The cubic root of 164505564 is about 547.9322513792.

The spelling of 164505564 in words is "one hundred sixty-four million, five hundred five thousand, five hundred sixty-four".