166146566 has 8 divisors (see below), whose sum is σ = 249275880. Its totient is φ = 83054608.

The previous prime is 166146557. The next prime is 166146581. The reversal of 166146566 is 665641661.

166146566 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

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, 8930 + ... + 20298.

It is an arithmetic number, because the mean of its divisors is an integer number (31159485).

Almost surely, 2^166146566 is an apocalyptic number.

166146566 is a deficient number, since it is larger than the sum of its proper divisors (83129314).

166146566 is a wasteful number, since it uses less digits than its factorization.

166146566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18678.

The product of its digits is 155520, while the sum is 41.

The square root of 166146566 is about 12889.7853356834. The cubic root of 166146566 is about 549.7481668022.

The spelling of 166146566 in words is "one hundred sixty-six million, one hundred forty-six thousand, five hundred sixty-six".