66389324 has 6 divisors (see below), whose sum is σ = 116181324. Its totient is φ = 33194660.

The previous prime is 66389299. The next prime is 66389329. The reversal of 66389324 is 42398366.

66389324 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 (66389329) 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 as a sum of consecutive naturals, namely, 8298662 + ... + 8298669.

It is an arithmetic number, because the mean of its divisors is an integer number (19363554).

Almost surely, 2^66389324 is an apocalyptic number.

It is an amenable number.

66389324 is a deficient number, since it is larger than the sum of its proper divisors (49792000).

66389324 is a wasteful number, since it uses less digits than its factorization.

66389324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16597335 (or 16597333 counting only the distinct ones).

The product of its digits is 186624, while the sum is 41.

The square root of 66389324 is about 8147.9644083661. The cubic root of 66389324 is about 404.9170667965.

The spelling of 66389324 in words is "sixty-six million, three hundred eighty-nine thousand, three hundred twenty-four".