6622623872 has 24 divisors (see below), whose sum is σ = 13195342965. Its totient is φ = 3310851584.

The previous prime is 6622623859. The next prime is 6622623893. The reversal of 6622623872 is 2783262266.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 4903360576 + 1719263296 = 70024^2 + 41464^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=57544.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 917108 + ... + 924300.

Almost surely, 2^6622623872 is an apocalyptic number.

It is an amenable number.

6622623872 is a deficient number, since it is larger than the sum of its proper divisors (6572719093).

6622623872 is an frugal number, since it uses more digits than its factorization.

6622623872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14400 (or 7195 counting only the distinct ones).

The product of its digits is 580608, while the sum is 44.

The square root of 6622623872 is about 81379.5052331974. The cubic root of 6622623872 is about 1877.9183114996.

The spelling of 6622623872 in words is "six billion, six hundred twenty-two million, six hundred twenty-three thousand, eight hundred seventy-two".