18666714 has 64 divisors (see below), whose sum is σ = 43794432. Its totient is φ = 5241600.

The previous prime is 18666709. The next prime is 18666733. The reversal of 18666714 is 41766681.

It is a happy 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 31 ways as a sum of consecutive naturals, for example, 142429 + ... + 142559.

It is an arithmetic number, because the mean of its divisors is an integer number (684288).

Almost surely, 2^18666714 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18666714, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21897216).

18666714 is an abundant number, since it is smaller than the sum of its proper divisors (25127718).

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

18666714 is a wasteful number, since it uses less digits than its factorization.

18666714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291.

The product of its digits is 48384, while the sum is 39.

The square root of 18666714 is about 4320.4992767040. The cubic root of 18666714 is about 265.2707047430.

It can be divided in two parts, 186667 and 14, that added together give a palindrome (186681).

The spelling of 18666714 in words is "eighteen million, six hundred sixty-six thousand, seven hundred fourteen".