2105765 has 8 divisors (see below), whose sum is σ = 2636928. Its totient is φ = 1611280.

The previous prime is 2105759. The next prime is 2105767. The reversal of 2105765 is 5675012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2105765 - 2¹⁰ = 2104741 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 9041 + ... + 9270.

It is an arithmetic number, because the mean of its divisors is an integer number (329616).

2^2105765 is an apocalyptic number.

It is an amenable number.

2105765 is a deficient number, since it is larger than the sum of its proper divisors (531163).

2105765 is a wasteful number, since it uses less digits than its factorization.

2105765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18339.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 2105765 is about 1451.1254253165. The cubic root of 2105765 is about 128.1749925870.

The spelling of 2105765 in words is "two million, one hundred five thousand, seven hundred sixty-five".