6622556224 has 28 divisors (see below), whose sum is σ = 13245128704. Its totient is φ = 3285201024.

The previous prime is 6622556219. The next prime is 6622556231. The reversal of 6622556224 is 4226552266.

It is a happy number.

6622556224 is an admirable number.

It is a super-2 number, since 2×6622556224² = 87716501880082276352, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 399264 + ... + 415519.

Almost surely, 2^6622556224 is an apocalyptic number.

6622556224 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

6622556224 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6622556224 is a wasteful number, since it uses less digits than its factorization.

6622556224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814922 (or 814912 counting only the distinct ones).

The product of its digits is 345600, while the sum is 40.

The square root of 6622556224 is about 81379.0895992330. The cubic root of 6622556224 is about 1877.9119173647.

The spelling of 6622556224 in words is "six billion, six hundred twenty-two million, five hundred fifty-six thousand, two hundred twenty-four".