66066303 has 4 divisors (see below), whose sum is σ = 88088408. Its totient is φ = 44044200.

The previous prime is 66066229. The next prime is 66066311. The reversal of 66066303 is 30366066.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 66066303 - 2²⁴ = 49289087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66066353) 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, 11011048 + ... + 11011053.

It is an arithmetic number, because the mean of its divisors is an integer number (22022102).

Almost surely, 2^66066303 is an apocalyptic number.

66066303 is a deficient number, since it is larger than the sum of its proper divisors (22022105).

66066303 is a wasteful number, since it uses less digits than its factorization.

66066303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22022104.

The product of its (nonzero) digits is 11664, while the sum is 30.

The square root of 66066303 is about 8128.1180478632. The cubic root of 66066303 is about 404.2592832045.

The spelling of 66066303 in words is "sixty-six million, sixty-six thousand, three hundred three".