6622556 has 24 divisors (see below), whose sum is σ = 12321120. Its totient is φ = 3108672.

The previous prime is 6622547. The next prime is 6622601. The reversal of 6622556 is 6552266.

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 7 ways as a sum of consecutive naturals, for example, 3521 + ... + 5063.

It is an arithmetic number, because the mean of its divisors is an integer number (513380).

Almost surely, 2^6622556 is an apocalyptic number.

It is an amenable number.

6622556 is a deficient number, since it is larger than the sum of its proper divisors (5698564).

6622556 is a wasteful number, since it uses less digits than its factorization.

6622556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1613 (or 1611 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The square root of 6622556 is about 2573.4327269233. The cubic root of 6622556 is about 187.7911896192.

It can be divided in two parts, 66 and 22556, that added together give a palindrome (22622).

The spelling of 6622556 in words is "six million, six hundred twenty-two thousand, five hundred fifty-six".