18066680 has 16 divisors (see below), whose sum is σ = 40650120. Its totient is φ = 7226656.

The previous prime is 18066679. The next prime is 18066709. The reversal of 18066680 is 8666081.

It is a self number, because there is not a number n which added to its sum of digits gives 18066680.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 225794 + ... + 225873.

Almost surely, 2^18066680 is an apocalyptic number.

18066680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18066680 is an abundant number, since it is smaller than the sum of its proper divisors (22583440).

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

18066680 is a wasteful number, since it uses less digits than its factorization.

18066680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451678 (or 451674 counting only the distinct ones).

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

The square root of 18066680 is about 4250.4917362583. The cubic root of 18066680 is about 262.3973536690.

The spelling of 18066680 in words is "eighteen million, sixty-six thousand, six hundred eighty".