6665630945 has 8 divisors (see below), whose sum is σ = 8168943744. Its totient is φ = 5219047024.

The previous prime is 6665630887. The next prime is 6665630957. The reversal of 6665630945 is 5490365666.

6665630945 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6665630945 - 2²² = 6661436641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6665630893 and 6665630902.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14181959 + ... + 14182428.

It is an arithmetic number, because the mean of its divisors is an integer number (1021117968).

Almost surely, 2^6665630945 is an apocalyptic number.

It is an amenable number.

6665630945 is a deficient number, since it is larger than the sum of its proper divisors (1503312799).

6665630945 is a wasteful number, since it uses less digits than its factorization.

6665630945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28364439.

The product of its (nonzero) digits is 3499200, while the sum is 50.

The square root of 6665630945 is about 81643.3153724174. The cubic root of 6665630945 is about 1881.9745875739.

The spelling of 6665630945 in words is "six billion, six hundred sixty-five million, six hundred thirty thousand, nine hundred forty-five".