66380306 has 8 divisors (see below), whose sum is σ = 99736320. Its totient is φ = 33134868.

The previous prime is 66380297. The next prime is 66380341. The reversal of 66380306 is 60308366.

It is a happy number.

66380306 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

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, 26126 + ... + 28553.

It is an arithmetic number, because the mean of its divisors is an integer number (12467040).

Almost surely, 2^66380306 is an apocalyptic number.

66380306 is a deficient number, since it is larger than the sum of its proper divisors (33356014).

66380306 is a wasteful number, since it uses less digits than its factorization.

66380306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55288.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 66380306 is about 8147.4109998207. The cubic root of 66380306 is about 404.8987319839.

The spelling of 66380306 in words is "sixty-six million, three hundred eighty thousand, three hundred six".