6630444065 has 12 divisors (see below), whose sum is σ = 9255558996. Its totient is φ = 4546590048.

The previous prime is 6630444049. The next prime is 6630444101. The reversal of 6630444065 is 5604440366.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 676624144 + 5953819921 = 26012^2 + 77161^2 .

It is not a de Polignac number, because 6630444065 - 2⁴ = 6630444049 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13531274 + ... + 13531763.

It is an arithmetic number, because the mean of its divisors is an integer number (771296583).

Almost surely, 2^6630444065 is an apocalyptic number.

It is an amenable number.

6630444065 is a deficient number, since it is larger than the sum of its proper divisors (2625114931).

6630444065 is a wasteful number, since it uses less digits than its factorization.

6630444065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27063056 (or 27063049 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 38.

The square root of 6630444065 is about 81427.5387384391. The cubic root of 6630444065 is about 1878.6571881782.

The spelling of 6630444065 in words is "six billion, six hundred thirty million, four hundred forty-four thousand, sixty-five".