66228027 has 4 divisors (see below), whose sum is σ = 88304040. Its totient is φ = 44152016.

The previous prime is 66227989. The next prime is 66228037. The reversal of 66228027 is 72082266.

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

It is a cyclic number.

It is not a de Polignac number, because 66228027 - 2⁸ = 66227771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66228037) 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, 11038002 + ... + 11038007.

It is an arithmetic number, because the mean of its divisors is an integer number (22076010).

Almost surely, 2^66228027 is an apocalyptic number.

66228027 is a deficient number, since it is larger than the sum of its proper divisors (22076013).

66228027 is a wasteful number, since it uses less digits than its factorization.

66228027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22076012.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 66228027 is about 8138.0603954505. The cubic root of 66228027 is about 404.5888771178.

The spelling of 66228027 in words is "sixty-six million, two hundred twenty-eight thousand, twenty-seven".