6822644 has 12 divisors (see below), whose sum is σ = 12642084. Its totient is φ = 3210624.

The previous prime is 6822631. The next prime is 6822659. The reversal of 6822644 is 4462286.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5290000 + 1532644 = 2300^2 + 1238^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6822644.

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, 50099 + ... + 50234.

It is an arithmetic number, because the mean of its divisors is an integer number (1053507).

Almost surely, 2^6822644 is an apocalyptic number.

It is an amenable number.

6822644 is a deficient number, since it is larger than the sum of its proper divisors (5819440).

6822644 is a wasteful number, since it uses less digits than its factorization.

6822644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100354 (or 100352 counting only the distinct ones).

The product of its digits is 18432, while the sum is 32.

The square root of 6822644 is about 2612.0191423495. The cubic root of 6822644 is about 189.6637079909.

The spelling of 6822644 in words is "six million, eight hundred twenty-two thousand, six hundred forty-four".