166016566 has 16 divisors (see below), whose sum is σ = 262503360. Its totient is φ = 78527880.

The previous prime is 166016551. The next prime is 166016579. The reversal of 166016566 is 665610661.

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, 28125 + ... + 33511.

It is an arithmetic number, because the mean of its divisors is an integer number (16406460).

Almost surely, 2^166016566 is an apocalyptic number.

166016566 is a deficient number, since it is larger than the sum of its proper divisors (96486794).

166016566 is a wasteful number, since it uses less digits than its factorization.

166016566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6219.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 166016566 is about 12884.7415961672. The cubic root of 166016566 is about 549.6047474283.

The spelling of 166016566 in words is "one hundred sixty-six million, sixteen thousand, five hundred sixty-six".