18066703 has 4 divisors (see below), whose sum is σ = 18146520. Its totient is φ = 17986888.

The previous prime is 18066679. The next prime is 18066709. The reversal of 18066703 is 30766081.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18066703 is a prime.

It is a Duffinian number.

It is a congruent number.

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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39568 + ... + 40021.

It is an arithmetic number, because the mean of its divisors is an integer number (4536630).

Almost surely, 2^18066703 is an apocalyptic number.

18066703 is a deficient number, since it is larger than the sum of its proper divisors (79817).

18066703 is an equidigital number, since it uses as much as digits as its factorization.

18066703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79816.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 18066703 is about 4250.4944418267. The cubic root of 18066703 is about 262.3974650183.

It can be divided in two parts, 18066 and 703, that added together give a square (18769 = 137²).

The spelling of 18066703 in words is "eighteen million, sixty-six thousand, seven hundred three".