18887066 has 8 divisors (see below), whose sum is σ = 30906144. Its totient is φ = 8585020.

The previous prime is 18887047. The next prime is 18887123. The reversal of 18887066 is 66078881.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 429230 + ... + 429273.

It is an arithmetic number, because the mean of its divisors is an integer number (3863268).

Almost surely, 2^18887066 is an apocalyptic number.

18887066 is a deficient number, since it is larger than the sum of its proper divisors (12019078).

18887066 is a wasteful number, since it uses less digits than its factorization.

18887066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858516.

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 18887066 is about 4345.9252179484. The cubic root of 18887066 is about 266.3104239564.

The spelling of 18887066 in words is "eighteen million, eight hundred eighty-seven thousand, sixty-six".