64328516 has 72 divisors (see below), whose sum is σ = 138984384. Its totient is φ = 25502400.

The previous prime is 64328513. The next prime is 64328519. The reversal of 64328516 is 61582346.

64328516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (64328513) and next prime (64328519).

It is not an unprimeable number, because it can be changed into a prime (64328513) 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 23 ways as a sum of consecutive naturals, for example, 636866 + ... + 636966.

Almost surely, 2^64328516 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64328516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69492192).

64328516 is an abundant number, since it is smaller than the sum of its proper divisors (74655868).

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

64328516 is a wasteful number, since it uses less digits than its factorization.

64328516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201 (or 176 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

The square root of 64328516 is about 8020.5059690770. The cubic root of 64328516 is about 400.6832406245.

The spelling of 64328516 in words is "sixty-four million, three hundred twenty-eight thousand, five hundred sixteen".