66303788 has 12 divisors (see below), whose sum is σ = 116100600. Its totient is φ = 33132192.

The previous prime is 66303781. The next prime is 66303821. The reversal of 66303788 is 88730366.

It is not an unprimeable number, because it can be changed into a prime (66303781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4763 + ... + 12461.

It is an arithmetic number, because the mean of its divisors is an integer number (9675050).

Almost surely, 2^66303788 is an apocalyptic number.

It is an amenable number.

66303788 is a deficient number, since it is larger than the sum of its proper divisors (49796812).

66303788 is a wasteful number, since it uses less digits than its factorization.

66303788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9856 (or 9854 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 66303788 is about 8142.7137982370. The cubic root of 66303788 is about 404.7430936868.

The spelling of 66303788 in words is "sixty-six million, three hundred three thousand, seven hundred eighty-eight".