6666147185 has 8 divisors (see below), whose sum is σ = 8469928296. Its totient is φ = 5019216640.

The previous prime is 6666147181. The next prime is 6666147209. The reversal of 6666147185 is 5817416666.

It can be written as a sum of positive squares in 4 ways, for example, as 1510332769 + 5155814416 = 38863^2 + 71804^2 .

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

It is not a de Polignac number, because 6666147185 - 2² = 6666147181 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6666147181) by changing a digit.

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, 39212546 + ... + 39212715.

It is an arithmetic number, because the mean of its divisors is an integer number (1058741037).

Almost surely, 2^6666147185 is an apocalyptic number.

It is an amenable number.

6666147185 is a deficient number, since it is larger than the sum of its proper divisors (1803781111).

6666147185 is a wasteful number, since it uses less digits than its factorization.

6666147185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78425283.

The product of its digits is 1451520, while the sum is 50.

The square root of 6666147185 is about 81646.4768682642. The cubic root of 6666147185 is about 1882.0231713958.

The spelling of 6666147185 in words is "six billion, six hundred sixty-six million, one hundred forty-seven thousand, one hundred eighty-five".