16668386 has 32 divisors (see below), whose sum is σ = 29756160. Its totient is φ = 6854400.

The previous prime is 16668361. The next prime is 16668401. The reversal of 16668386 is 68386661.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40550 + ... + 40958.

It is an arithmetic number, because the mean of its divisors is an integer number (929880).

Almost surely, 2^16668386 is an apocalyptic number.

16668386 is a deficient number, since it is larger than the sum of its proper divisors (13087774).

16668386 is a wasteful number, since it uses less digits than its factorization.

16668386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530.

The product of its digits is 248832, while the sum is 44.

The square root of 16668386 is about 4082.6934736764. The cubic root of 16668386 is about 255.4452607715.

The spelling of 16668386 in words is "sixteen million, six hundred sixty-eight thousand, three hundred eighty-six".