2166626 has 24 divisors (see below), whose sum is σ = 4085760. Its totient is φ = 843480.

The previous prime is 2166613. The next prime is 2166629. The reversal of 2166626 is 6266612.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166629) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1055 + ... + 2333.

It is an arithmetic number, because the mean of its divisors is an integer number (170240).

2^2166626 is an apocalyptic number.

2166626 is a deficient number, since it is larger than the sum of its proper divisors (1919134).

2166626 is a wasteful number, since it uses less digits than its factorization.

2166626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310 (or 1299 counting only the distinct ones).

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

The square root of 2166626 is about 1471.9463305433. The cubic root of 2166626 is about 129.3981250331.

The spelling of 2166626 in words is "two million, one hundred sixty-six thousand, six hundred twenty-six".