18066608 has 20 divisors (see below), whose sum is σ = 40004880. Its totient is φ = 7742784.

The previous prime is 18066599. The next prime is 18066611. The reversal of 18066608 is 80666081.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80543 + ... + 80766.

It is an arithmetic number, because the mean of its divisors is an integer number (2000244).

Almost surely, 2^18066608 is an apocalyptic number.

It is an amenable number.

18066608 is an abundant number, since it is smaller than the sum of its proper divisors (21938272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18066608 is a wasteful number, since it uses less digits than its factorization.

18066608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161324 (or 161318 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 18066608 is about 4250.4832666416. The cubic root of 18066608 is about 262.3970050967.

The spelling of 18066608 in words is "eighteen million, sixty-six thousand, six hundred eight".