18066265 has 8 divisors (see below), whose sum is σ = 24776640. Its totient is φ = 12388272.

The previous prime is 18066241. The next prime is 18066277. The reversal of 18066265 is 56266081.

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

It is a cyclic number.

It is not a de Polignac number, because 18066265 - 2¹⁵ = 18033497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18066265.

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 7 ways as a sum of consecutive naturals, for example, 258055 + ... + 258124.

It is an arithmetic number, because the mean of its divisors is an integer number (3097080).

Almost surely, 2^18066265 is an apocalyptic number.

It is an amenable number.

18066265 is a deficient number, since it is larger than the sum of its proper divisors (6710375).

18066265 is an equidigital number, since it uses as much as digits as its factorization.

18066265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516191.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 18066265 is about 4250.4429180969. The cubic root of 18066265 is about 262.3953445241.

The spelling of 18066265 in words is "eighteen million, sixty-six thousand, two hundred sixty-five".