166066263 has 24 divisors (see below), whose sum is σ = 262094976. Its totient is φ = 100486800.

The previous prime is 166066259. The next prime is 166066273. The reversal of 166066263 is 362660661.

It is not a de Polignac number, because 166066263 - 2² = 166066259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166066253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 101256 + ... + 102882.

It is an arithmetic number, because the mean of its divisors is an integer number (10920624).

Almost surely, 2^166066263 is an apocalyptic number.

166066263 is a deficient number, since it is larger than the sum of its proper divisors (96028713).

166066263 is a wasteful number, since it uses less digits than its factorization.

166066263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2675 (or 2672 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 166066263 is about 12886.6699732708. The cubic root of 166066263 is about 549.6595832855.

The spelling of 166066263 in words is "one hundred sixty-six million, sixty-six thousand, two hundred sixty-three".