64659912 has 32 divisors (see below), whose sum is σ = 161908800. Its totient is φ = 21518784.

The previous prime is 64659901. The next prime is 64659919. The reversal of 64659912 is 21995646.

It is a happy number.

64659912 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 (64659919) 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, 16389 + ... + 19947.

It is an arithmetic number, because the mean of its divisors is an integer number (5059650).

Almost surely, 2^64659912 is an apocalyptic number.

It is an amenable number.

64659912 is an abundant number, since it is smaller than the sum of its proper divisors (97248888).

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

64659912 is a wasteful number, since it uses less digits than its factorization.

64659912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4325 (or 4321 counting only the distinct ones).

The product of its digits is 116640, while the sum is 42.

The square root of 64659912 is about 8041.1387253299. The cubic root of 64659912 is about 401.3701182483.

The spelling of 64659912 in words is "sixty-four million, six hundred fifty-nine thousand, nine hundred twelve".