6618665873 has 8 divisors (see below), whose sum is σ = 6658848000. Its totient is φ = 6578519728.

The previous prime is 6618665861. The next prime is 6618665897. The reversal of 6618665873 is 3785668166.

It is a happy number.

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 6618665873 - 2¹⁰ = 6618664849 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6611665873) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 421715 + ... + 437127.

It is an arithmetic number, because the mean of its divisors is an integer number (832356000).

Almost surely, 2^6618665873 is an apocalyptic number.

It is an amenable number.

6618665873 is a deficient number, since it is larger than the sum of its proper divisors (40182127).

6618665873 is a wasteful number, since it uses less digits than its factorization.

6618665873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17991.

The product of its digits is 8709120, while the sum is 56.

The square root of 6618665873 is about 81355.1834427285. The cubic root of 6618665873 is about 1877.5441254686.

The spelling of 6618665873 in words is "six billion, six hundred eighteen million, six hundred sixty-five thousand, eight hundred seventy-three".