64636120 has 32 divisors (see below), whose sum is σ = 145663920. Its totient is φ = 25813120.

The previous prime is 64636109. The next prime is 64636123. The reversal of 64636120 is 2163646.

64636120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64636123) 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 7 ways as a sum of consecutive naturals, for example, 41679 + ... + 43201.

Almost surely, 2^64636120 is an apocalyptic number.

It is an amenable number.

64636120 is an abundant number, since it is smaller than the sum of its proper divisors (81027800).

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

64636120 is a wasteful number, since it uses less digits than its factorization.

64636120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2595 (or 2591 counting only the distinct ones).

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

The square root of 64636120 is about 8039.6591967570. The cubic root of 64636120 is about 401.3208833666.

Adding to 64636120 its reverse (2163646), we get a palindrome (66799766).

The spelling of 64636120 in words is "sixty-four million, six hundred thirty-six thousand, one hundred twenty".