6663706120 has 32 divisors (see below), whose sum is σ = 15030034200. Its totient is φ = 2658958848.

The previous prime is 6663706117. The next prime is 6663706139. The reversal of 6663706120 is 216073666.

It can be written as a sum of positive squares in 4 ways, for example, as 6156285444 + 507420676 = 78462^2 + 22526^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6663706120.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187299 + ... + 220018.

Almost surely, 2^6663706120 is an apocalyptic number.

It is an amenable number.

6663706120 is an abundant number, since it is smaller than the sum of its proper divisors (8366328080).

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

6663706120 is a wasteful number, since it uses less digits than its factorization.

6663706120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407737 (or 407733 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 6663706120 is about 81631.5265078389. The cubic root of 6663706120 is about 1881.7934184039.

Adding to 6663706120 its reverse (216073666), we get a palindrome (6879779786).

The spelling of 6663706120 in words is "six billion, six hundred sixty-three million, seven hundred six thousand, one hundred twenty".