18960666 has 8 divisors (see below), whose sum is σ = 37921344. Its totient is φ = 6320220.

The previous prime is 18960619. The next prime is 18960701. The reversal of 18960666 is 66606981.

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

18960666 is an admirable number.

It is a Curzon number.

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, 1580050 + ... + 1580061.

It is an arithmetic number, because the mean of its divisors is an integer number (4740168).

Almost surely, 2^18960666 is an apocalyptic number.

18960666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18960666 is a wasteful number, since it uses less digits than its factorization.

18960666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3160116.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 18960666 is about 4354.3846867267. The cubic root of 18960666 is about 266.6558992180.

The spelling of 18960666 in words is "eighteen million, nine hundred sixty thousand, six hundred sixty-six".