66330602 has 8 divisors (see below), whose sum is σ = 107149476. Its totient is φ = 30614112.

The previous prime is 66330601. The next prime is 66330619. The reversal of 66330602 is 20603366.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 61136761 + 5193841 = 7819^2 + 2279^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 2551177 = 66330602 / (6 + 6 + 3 + 3 + 0 + 6 + 0 + 2).

It is not an unprimeable number, because it can be changed into a prime (66330601) 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, 1275563 + ... + 1275614.

Almost surely, 2^66330602 is an apocalyptic number.

66330602 is a deficient number, since it is larger than the sum of its proper divisors (40818874).

66330602 is a wasteful number, since it uses less digits than its factorization.

66330602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2551192.

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 66330602 is about 8144.3601344734. The cubic root of 66330602 is about 404.7976472247.

Adding to 66330602 its reverse (20603366), we get a palindrome (86933968).

The spelling of 66330602 in words is "sixty-six million, three hundred thirty thousand, six hundred two".