66328732 has 12 divisors (see below), whose sum is σ = 116815720. Its totient is φ = 32952816.

The previous prime is 66328729. The next prime is 66328733. The reversal of 66328732 is 23782366.

66328732 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 66328691 and 66328700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66328733) 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, 52182 + ... + 53437.

Almost surely, 2^66328732 is an apocalyptic number.

It is an amenable number.

66328732 is a deficient number, since it is larger than the sum of its proper divisors (50486988).

66328732 is a wasteful number, since it uses less digits than its factorization.

66328732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105780 (or 105778 counting only the distinct ones).

The product of its digits is 72576, while the sum is 37.

The square root of 66328732 is about 8144.2453302930. The cubic root of 66328732 is about 404.7938431550.

The spelling of 66328732 in words is "sixty-six million, three hundred twenty-eight thousand, seven hundred thirty-two".