2606644 has 12 divisors (see below), whose sum is σ = 4830084. Its totient is φ = 1226624.

The previous prime is 2606633. The next prime is 2606651. The reversal of 2606644 is 4466062.

2606644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1904400 + 702244 = 1380^2 + 838^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 19099 + ... + 19234.

It is an arithmetic number, because the mean of its divisors is an integer number (402507).

2^2606644 is an apocalyptic number.

It is an amenable number.

2606644 is a deficient number, since it is larger than the sum of its proper divisors (2223440).

2606644 is a wasteful number, since it uses less digits than its factorization.

2606644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38354 (or 38352 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 2606644 is about 1614.5104521185. The cubic root of 2606644 is about 137.6239147410.

The spelling of 2606644 in words is "two million, six hundred six thousand, six hundred forty-four".