2645844 has 24 divisors (see below), whose sum is σ = 6387360. Its totient is φ = 851424.

The previous prime is 2645843. The next prime is 2645849. The reversal of 2645844 is 4485462.

2645844 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2645843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3454 + ... + 4149.

It is an arithmetic number, because the mean of its divisors is an integer number (266140).

2^2645844 is an apocalyptic number.

It is an amenable number.

2645844 is an abundant number, since it is smaller than the sum of its proper divisors (3741516).

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

2645844 is a wasteful number, since it uses less digits than its factorization.

2645844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7639 (or 7637 counting only the distinct ones).

The product of its digits is 30720, while the sum is 33.

The square root of 2645844 is about 1626.6050534779. The cubic root of 2645844 is about 138.3103705373.

The spelling of 2645844 in words is "two million, six hundred forty-five thousand, eight hundred forty-four".