166066061 has 16 divisors (see below), whose sum is σ = 203174400. Its totient is φ = 132558768.

The previous prime is 166066009. The next prime is 166066063. The reversal of 166066061 is 160660661.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166066061 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166066063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2735 + ... + 18428.

It is an arithmetic number, because the mean of its divisors is an integer number (12698400).

Almost surely, 2^166066061 is an apocalyptic number.

It is an amenable number.

166066061 is a deficient number, since it is larger than the sum of its proper divisors (37108339).

166066061 is a wasteful number, since it uses less digits than its factorization.

166066061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21248.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 166066061 is about 12886.6621357123. The cubic root of 166066061 is about 549.6593604201.

The spelling of 166066061 in words is "one hundred sixty-six million, sixty-six thousand, sixty-one".