18660606 has 8 divisors (see below), whose sum is σ = 37321224. Its totient is φ = 6220200.

The previous prime is 18660583. The next prime is 18660623. The reversal of 18660606 is 60606681.

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

18660606 is an admirable number.

It is a congruent 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, 1555045 + ... + 1555056.

It is an arithmetic number, because the mean of its divisors is an integer number (4665153).

Almost surely, 2^18660606 is an apocalyptic number.

18660606 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.

18660606 is a wasteful number, since it uses less digits than its factorization.

18660606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3110106.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 18660606 is about 4319.7923561208. The cubic root of 18660606 is about 265.2417682052.

The spelling of 18660606 in words is "eighteen million, six hundred sixty thousand, six hundred six".