164221336 has 8 divisors (see below), whose sum is σ = 307915020. Its totient is φ = 82110664.

The previous prime is 164221331. The next prime is 164221339. The reversal of 164221336 is 633122461.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164221331) 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 as a sum of consecutive naturals, namely, 10263826 + ... + 10263841.

Almost surely, 2^164221336 is an apocalyptic number.

It is an amenable number.

164221336 is a deficient number, since it is larger than the sum of its proper divisors (143693684).

164221336 is a wasteful number, since it uses less digits than its factorization.

164221336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20527673 (or 20527669 counting only the distinct ones).

The product of its digits is 5184, while the sum is 28.

The square root of 164221336 is about 12814.8872800349. The cubic root of 164221336 is about 547.6165022471.

Adding to 164221336 its reverse (633122461), we get a palindrome (797343797).

The spelling of 164221336 in words is "one hundred sixty-four million, two hundred twenty-one thousand, three hundred thirty-six".