18668006 has 16 divisors (see below), whose sum is σ = 33885216. Its totient is φ = 7529856.

The previous prime is 18667981. The next prime is 18668011. The reversal of 18668006 is 60086681.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38981 + ... + 39456.

It is an arithmetic number, because the mean of its divisors is an integer number (2117826).

Almost surely, 2^18668006 is an apocalyptic number.

18668006 is a deficient number, since it is larger than the sum of its proper divisors (15217210).

18668006 is a wasteful number, since it uses less digits than its factorization.

18668006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78463.

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

The square root of 18668006 is about 4320.6487938734. The cubic root of 18668006 is about 265.2768247604.

The spelling of 18668006 in words is "eighteen million, six hundred sixty-eight thousand, six".