166311166 has 8 divisors (see below), whose sum is σ = 285104880. Its totient is φ = 71276208.

The previous prime is 166311163. The next prime is 166311209. The reversal of 166311166 is 661113661.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166311163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5939671 + ... + 5939698.

It is an arithmetic number, because the mean of its divisors is an integer number (35638110).

Almost surely, 2^166311166 is an apocalyptic number.

166311166 is a deficient number, since it is larger than the sum of its proper divisors (118793714).

166311166 is a wasteful number, since it uses less digits than its factorization.

166311166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11879378.

The product of its digits is 3888, while the sum is 31.

The square root of 166311166 is about 12896.1686558450. The cubic root of 166311166 is about 549.9296505062.

The spelling of 166311166 in words is "one hundred sixty-six million, three hundred eleven thousand, one hundred sixty-six".