6622558844 has 24 divisors (see below), whose sum is σ = 12687765888. Its totient is φ = 2999611440.

The previous prime is 6622558841. The next prime is 6622558963. The reversal of 6622558844 is 4488552266.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 6622558792 and 6622558801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6622558841) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253472 + ... + 278375.

It is an arithmetic number, because the mean of its divisors is an integer number (528656912).

Almost surely, 2^6622558844 is an apocalyptic number.

It is an amenable number.

6622558844 is a deficient number, since it is larger than the sum of its proper divisors (6065207044).

6622558844 is a wasteful number, since it uses less digits than its factorization.

6622558844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532145 (or 532143 counting only the distinct ones).

The product of its digits is 3686400, while the sum is 50.

The square root of 6622558844 is about 81379.1056967327. The cubic root of 6622558844 is about 1877.9121650097.

The spelling of 6622558844 in words is "six billion, six hundred twenty-two million, five hundred fifty-eight thousand, eight hundred forty-four".