6464886244 has 12 divisors (see below), whose sum is σ = 11317341868. Its totient is φ = 3231360000.

The previous prime is 6464886229. The next prime is 6464886251. The reversal of 6464886244 is 4426884646.

It can be written as a sum of positive squares in 2 ways, for example, as 1632968100 + 4831918144 = 40410^2 + 69512^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6464886191 and 6464886200.

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, 257277 + ... + 281284.

Almost surely, 2^6464886244 is an apocalyptic number.

It is an amenable number.

6464886244 is a deficient number, since it is larger than the sum of its proper divisors (4852455624).

6464886244 is a wasteful number, since it uses less digits than its factorization.

6464886244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541566 (or 541564 counting only the distinct ones).

The product of its digits is 7077888, while the sum is 52.

The square root of 6464886244 is about 80404.5163159384. The cubic root of 6464886244 is about 1862.8889322083. Note that the first 3 decimals are identical.

The spelling of 6464886244 in words is "six billion, four hundred sixty-four million, eight hundred eighty-six thousand, two hundred forty-four".