2040644 has 12 divisors (see below), whose sum is σ = 3591168. Its totient is φ = 1014600.

The previous prime is 2040641. The next prime is 2040653. The reversal of 2040644 is 4460402.

It is not an unprimeable number, because it can be changed into a prime (2040641) 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, 572 + ... + 2099.

It is an arithmetic number, because the mean of its divisors is an integer number (299264).

2^2040644 is an apocalyptic number.

It is an amenable number.

2040644 is a deficient number, since it is larger than the sum of its proper divisors (1550524).

2040644 is a wasteful number, since it uses less digits than its factorization.

2040644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2866 (or 2864 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 2040644 is about 1428.5111130124. The cubic root of 2040644 is about 126.8398585002.

The spelling of 2040644 in words is "two million, forty thousand, six hundred forty-four".