7211166 has 16 divisors (see below), whose sum is σ = 14469888. Its totient is φ = 2395800.

The previous prime is 7211147. The next prime is 7211173. The reversal of 7211166 is 6611127.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 171 + ... + 3801.

It is an arithmetic number, because the mean of its divisors is an integer number (904368).

Almost surely, 2^7211166 is an apocalyptic number.

7211166 is an abundant number, since it is smaller than the sum of its proper divisors (7258722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7211166 is a wasteful number, since it uses less digits than its factorization.

7211166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3967.

The product of its digits is 504, while the sum is 24.

The square root of 7211166 is about 2685.3614281880. The cubic root of 7211166 is about 193.1976462384.

The spelling of 7211166 in words is "seven million, two hundred eleven thousand, one hundred sixty-six".