18066227 has 8 divisors (see below), whose sum is σ = 18289152. Its totient is φ = 17845000.

The previous prime is 18066221. The next prime is 18066229. The reversal of 18066227 is 72266081.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18066227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18066193 and 18066202.

It is not an unprimeable number, because it can be changed into a prime (18066221) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 41702 + ... + 42132.

It is an arithmetic number, because the mean of its divisors is an integer number (2286144).

Almost surely, 2^18066227 is an apocalyptic number.

18066227 is a deficient number, since it is larger than the sum of its proper divisors (222925).

18066227 is a wasteful number, since it uses less digits than its factorization.

18066227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 18066227 is about 4250.4384479722. The cubic root of 18066227 is about 262.3951605527.

The spelling of 18066227 in words is "eighteen million, sixty-six thousand, two hundred twenty-seven".