6622448646 has 64 divisors (see below), whose sum is σ = 14565298176. Its totient is φ = 1990713600.

The previous prime is 6622448621. The next prime is 6622448653. The reversal of 6622448646 is 6468442266.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 6622448595 and 6622448604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7727050 + ... + 7727906.

It is an arithmetic number, because the mean of its divisors is an integer number (227582784).

Almost surely, 2^6622448646 is an apocalyptic number.

6622448646 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

6622448646 is an abundant number, since it is smaller than the sum of its proper divisors (7942849530).

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

6622448646 is a wasteful number, since it uses less digits than its factorization.

6622448646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1677.

The product of its digits is 2654208, while the sum is 48.

The square root of 6622448646 is about 81378.4286282305. The cubic root of 6622448646 is about 1877.9017489295.

The spelling of 6622448646 in words is "six billion, six hundred twenty-two million, four hundred forty-eight thousand, six hundred forty-six".