64539312 has 20 divisors (see below), whose sum is σ = 166726680. Its totient is φ = 21513088.

The previous prime is 64539283. The next prime is 64539313. The reversal of 64539312 is 21393546.

64539312 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 (64539313) 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, 672237 + ... + 672332.

It is an arithmetic number, because the mean of its divisors is an integer number (8336334).

Almost surely, 2^64539312 is an apocalyptic number.

It is an amenable number.

64539312 is an abundant number, since it is smaller than the sum of its proper divisors (102187368).

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

64539312 is a wasteful number, since it uses less digits than its factorization.

64539312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344580 (or 1344574 counting only the distinct ones).

The product of its digits is 19440, while the sum is 33.

The square root of 64539312 is about 8033.6362875102. The cubic root of 64539312 is about 401.1204253540.

The spelling of 64539312 in words is "sixty-four million, five hundred thirty-nine thousand, three hundred twelve".