2622644 has 24 divisors (see below), whose sum is σ = 4959360. Its totient is φ = 1209824.

The previous prime is 2622637. The next prime is 2622679. The reversal of 2622644 is 4462262.

It is a d-powerful number, because it can be written as 2⁹ + 6³ + 2¹⁹ + 2²¹ + 6³ + 4 + 4⁴ .

It is a congruent number.

It is an unprimeable number.

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, 2177 + ... + 3159.

It is an arithmetic number, because the mean of its divisors is an integer number (206640).

2^2622644 is an apocalyptic number.

It is an amenable number.

2622644 is a deficient number, since it is larger than the sum of its proper divisors (2336716).

2622644 is a wasteful number, since it uses less digits than its factorization.

2622644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039 (or 1037 counting only the distinct ones).

The product of its digits is 4608, while the sum is 26.

The square root of 2622644 is about 1619.4579340014. The cubic root of 2622644 is about 137.9049264637.

The spelling of 2622644 in words is "two million, six hundred twenty-two thousand, six hundred forty-four".