64528616 has 16 divisors (see below), whose sum is σ = 126252000. Its totient is φ = 30861424.

The previous prime is 64528601. The next prime is 64528619. The reversal of 64528616 is 61682546.

It is a self number, because there is not a number n which added to its sum of digits gives 64528616.

It is not an unprimeable number, because it can be changed into a prime (64528619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175166 + ... + 175533.

It is an arithmetic number, because the mean of its divisors is an integer number (7890750).

Almost surely, 2^64528616 is an apocalyptic number.

It is an amenable number.

64528616 is a deficient number, since it is larger than the sum of its proper divisors (61723384).

64528616 is a wasteful number, since it uses less digits than its factorization.

64528616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350728 (or 350724 counting only the distinct ones).

The product of its digits is 69120, while the sum is 38.

The square root of 64528616 is about 8032.9705588904. The cubic root of 64528616 is about 401.0982651079.

The spelling of 64528616 in words is "sixty-four million, five hundred twenty-eight thousand, six hundred sixteen".