166305268 has 6 divisors (see below), whose sum is σ = 291034226. Its totient is φ = 83152632.

The previous prime is 166305263. The next prime is 166305283. The reversal of 166305268 is 862503661.

It can be written as a sum of positive squares in only one way, i.e., 164557584 + 1747684 = 12828^2 + 1322^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166305263) 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 as a sum of consecutive naturals, namely, 20788155 + ... + 20788162.

Almost surely, 2^166305268 is an apocalyptic number.

It is an amenable number.

166305268 is a deficient number, since it is larger than the sum of its proper divisors (124728958).

166305268 is a wasteful number, since it uses less digits than its factorization.

166305268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41576321 (or 41576319 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 166305268 is about 12895.9399812499. The cubic root of 166305268 is about 549.9231495929.

The spelling of 166305268 in words is "one hundred sixty-six million, three hundred five thousand, two hundred sixty-eight".