166446005 has 16 divisors (see below), whose sum is σ = 218289600. Its totient is φ = 120831360.

The previous prime is 166446001. The next prime is 166446013. The reversal of 166446005 is 500644661.

It is not a de Polignac number, because 166446005 - 2² = 166446001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166446001) 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 15 ways as a sum of consecutive naturals, for example, 31601 + ... + 36489.

It is an arithmetic number, because the mean of its divisors is an integer number (13643100).

Almost surely, 2^166446005 is an apocalyptic number.

It is an amenable number.

166446005 is a deficient number, since it is larger than the sum of its proper divisors (51843595).

166446005 is a wasteful number, since it uses less digits than its factorization.

166446005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5524.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 166446005 is about 12901.3954671578. The cubic root of 166446005 is about 550.0782312962.

The spelling of 166446005 in words is "one hundred sixty-six million, four hundred forty-six thousand, five".