2105766 has 24 divisors (see below), whose sum is σ = 4914000. Its totient is φ = 647856.

The previous prime is 2105759. The next prime is 2105767. The reversal of 2105766 is 6675012.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4266 + ... + 4733.

It is an arithmetic number, because the mean of its divisors is an integer number (204750).

2^2105766 is an apocalyptic number.

2105766 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2105766 is an abundant number, since it is smaller than the sum of its proper divisors (2808234).

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

2105766 is a wasteful number, since it uses less digits than its factorization.

2105766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9020 (or 9017 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 2105766 is about 1451.1257698766. The cubic root of 2105766 is about 128.1750128766.

The spelling of 2105766 in words is "two million, one hundred five thousand, seven hundred sixty-six".