166166606 has 8 divisors (see below), whose sum is σ = 249323520. Its totient is φ = 83058768.

The previous prime is 166166599. The next prime is 166166617. The reversal of 166166606 is 606661661.

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

It is a super-2 number, since 2×166166606² = 55222681899118472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 166166606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2126 + ... + 18353.

It is an arithmetic number, because the mean of its divisors is an integer number (31165440).

Almost surely, 2^166166606 is an apocalyptic number.

166166606 is a deficient number, since it is larger than the sum of its proper divisors (83156914).

166166606 is a wasteful number, since it uses less digits than its factorization.

166166606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24538.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 166166606 is about 12890.5626719705. The cubic root of 166166606 is about 549.7702687945.

The spelling of 166166606 in words is "one hundred sixty-six million, one hundred sixty-six thousand, six hundred six".