6663599312 has 20 divisors (see below), whose sum is σ = 12912154596. Its totient is φ = 3331430400.

The previous prime is 6663599311. The next prime is 6663599357. The reversal of 6663599312 is 2139953666.

It can be written as a sum of positive squares in 2 ways, for example, as 5280056896 + 1383542416 = 72664^2 + 37196^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6663599311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179888 + ... + 213744.

Almost surely, 2^6663599312 is an apocalyptic number.

It is an amenable number.

6663599312 is a deficient number, since it is larger than the sum of its proper divisors (6248555284).

6663599312 is a wasteful number, since it uses less digits than its factorization.

6663599312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46166 (or 46160 counting only the distinct ones).

The product of its digits is 1574640, while the sum is 50.

The square root of 6663599312 is about 81630.8722971891. The cubic root of 6663599312 is about 1881.7833643558.

The spelling of 6663599312 in words is "six billion, six hundred sixty-three million, five hundred ninety-nine thousand, three hundred twelve".