6660844996 has 81 divisors (see below), whose sum is σ = 13101912999. Its totient is φ = 2961608832.

The previous prime is 6660844937. The next prime is 6660845047. The reversal of 6660844996 is 6994480666.

The square root of 6660844996 is 81614.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 670084996 + 5990760000 = 25886^2 + 77400^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6660844996.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 91244416 + ... + 91244488.

Almost surely, 2^6660844996 is an apocalyptic number.

6660844996 is the 81614-th square number.

It is an amenable number.

6660844996 is a deficient number, since it is larger than the sum of its proper divisors (6441068003).

6660844996 is a wasteful number, since it uses less digits than its factorization.

6660844996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 58.

The cubic root of 6660844996 is about 1881.5240580328.

The spelling of 6660844996 in words is "six billion, six hundred sixty million, eight hundred forty-four thousand, nine hundred ninety-six".