18066705 has 8 divisors (see below), whose sum is σ = 28906752. Its totient is φ = 9635568.

The previous prime is 18066679. The next prime is 18066709. The reversal of 18066705 is 50766081.

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

It is not a de Polignac number, because 18066705 - 2⁹ = 18066193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18066709) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 602209 + ... + 602238.

It is an arithmetic number, because the mean of its divisors is an integer number (3613344).

Almost surely, 2^18066705 is an apocalyptic number.

18066705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18066705 is a deficient number, since it is larger than the sum of its proper divisors (10840047).

18066705 is a wasteful number, since it uses less digits than its factorization.

18066705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204455.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 18066705 is about 4250.4946770935. The cubic root of 18066705 is about 262.3974747009.

The spelling of 18066705 in words is "eighteen million, sixty-six thousand, seven hundred five".