2105644 has 12 divisors (see below), whose sum is σ = 3803968. Its totient is φ = 1018800.

The previous prime is 2105641. The next prime is 2105669. The reversal of 2105644 is 4465012.

It is not an unprimeable number, because it can be changed into a prime (2105641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8367 + ... + 8614.

2^2105644 is an apocalyptic number.

It is an amenable number.

2105644 is a deficient number, since it is larger than the sum of its proper divisors (1698324).

2105644 is a wasteful number, since it uses less digits than its factorization.

2105644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17016 (or 17014 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 2105644 is about 1451.0837329389. The cubic root of 2105644 is about 128.1725375060.

The spelling of 2105644 in words is "two million, one hundred five thousand, six hundred forty-four".