64185136 has 20 divisors (see below), whose sum is σ = 126112464. Its totient is φ = 31640000.

The previous prime is 64185119. The next prime is 64185137. The reversal of 64185136 is 63158146.

It is a happy number.

64185136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (64185137) 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 in 3 ways as a sum of consecutive naturals, for example, 27115 + ... + 29386.

Almost surely, 2^64185136 is an apocalyptic number.

It is an amenable number.

64185136 is a deficient number, since it is larger than the sum of its proper divisors (61927328).

64185136 is a wasteful number, since it uses less digits than its factorization.

64185136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56580 (or 56574 counting only the distinct ones).

The product of its digits is 17280, while the sum is 34.

The square root of 64185136 is about 8011.5626440789. The cubic root of 64185136 is about 400.3853286853.

The spelling of 64185136 in words is "sixty-four million, one hundred eighty-five thousand, one hundred thirty-six".