2217166 has 32 divisors (see below), whose sum is σ = 4055040. Its totient is φ = 889056.

The previous prime is 2217143. The next prime is 2217181. The reversal of 2217166 is 6617122.

2217166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 2217166.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17395 + ... + 17521.

It is an arithmetic number, because the mean of its divisors is an integer number (126720).

2^2217166 is an apocalyptic number.

2217166 is a deficient number, since it is larger than the sum of its proper divisors (1837874).

2217166 is a wasteful number, since it uses less digits than its factorization.

2217166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208.

The product of its digits is 1008, while the sum is 25.

The square root of 2217166 is about 1489.0151107360. The cubic root of 2217166 is about 130.3965406763.

The spelling of 2217166 in words is "two million, two hundred seventeen thousand, one hundred sixty-six".