164563223 has 4 divisors (see below), whose sum is σ = 179523528. Its totient is φ = 149602920.

The previous prime is 164563219. The next prime is 164563253. The reversal of 164563223 is 322365461.

164563223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 164563223 - 2² = 164563219 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 164563223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164563253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7480136 + ... + 7480157.

It is an arithmetic number, because the mean of its divisors is an integer number (44880882).

Almost surely, 2^164563223 is an apocalyptic number.

164563223 is a deficient number, since it is larger than the sum of its proper divisors (14960305).

164563223 is a wasteful number, since it uses less digits than its factorization.

164563223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14960304.

The product of its digits is 25920, while the sum is 32.

The square root of 164563223 is about 12828.2197907582. The cubic root of 164563223 is about 547.9962604306.

The spelling of 164563223 in words is "one hundred sixty-four million, five hundred sixty-three thousand, two hundred twenty-three".