2166266 has 16 divisors (see below), whose sum is σ = 3458400. Its totient is φ = 1014768.

The previous prime is 2166251. The next prime is 2166289. The reversal of 2166266 is 6626612.

2166266 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 3881 + ... + 4403.

It is an arithmetic number, because the mean of its divisors is an integer number (216150).

2^2166266 is an apocalyptic number.

2166266 is a deficient number, since it is larger than the sum of its proper divisors (1292134).

2166266 is a wasteful number, since it uses less digits than its factorization.

2166266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653.

The product of its digits is 5184, while the sum is 29.

The square root of 2166266 is about 1471.8240383959. The cubic root of 2166266 is about 129.3909578362.

The spelling of 2166266 in words is "two million, one hundred sixty-six thousand, two hundred sixty-six".