164423564 has 12 divisors (see below), whose sum is σ = 289842504. Its totient is φ = 81611424.

The previous prime is 164423563. The next prime is 164423579. The reversal of 164423564 is 465324461.

It is a super-3 number, since 3×164423564³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (164423563) 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, 149474 + ... + 150569.

It is an arithmetic number, because the mean of its divisors is an integer number (24153542).

Almost surely, 2^164423564 is an apocalyptic number.

It is an amenable number.

164423564 is a deficient number, since it is larger than the sum of its proper divisors (125418940).

164423564 is a wasteful number, since it uses less digits than its factorization.

164423564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300184 (or 300182 counting only the distinct ones).

The product of its digits is 69120, while the sum is 35.

The square root of 164423564 is about 12822.7752066392. The cubic root of 164423564 is about 547.8411948602.

The spelling of 164423564 in words is "one hundred sixty-four million, four hundred twenty-three thousand, five hundred sixty-four".