66588064 has 12 divisors (see below), whose sum is σ = 131095314. Its totient is φ = 33294016.

The previous prime is 66588019. The next prime is 66588083. The reversal of 66588064 is 46088566.

It can be written as a sum of positive squares in only one way, i.e., 49843600 + 16744464 = 7060^2 + 4092^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 66588064.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1040407 + ... + 1040470.

Almost surely, 2^66588064 is an apocalyptic number.

It is an amenable number.

66588064 is a deficient number, since it is larger than the sum of its proper divisors (64507250).

66588064 is a wasteful number, since it uses less digits than its factorization.

66588064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2080887 (or 2080879 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The square root of 66588064 is about 8160.1509789954. The cubic root of 66588064 is about 405.3207112682.

The spelling of 66588064 in words is "sixty-six million, five hundred eighty-eight thousand, sixty-four".