6668017066 has 16 divisors (see below), whose sum is σ = 10600687944. Its totient is φ = 3134836224.

The previous prime is 6668017061. The next prime is 6668017091. The reversal of 6668017066 is 6607108666.

It can be written as a sum of positive squares in 4 ways, for example, as 6497166025 + 170851041 = 80605^2 + 13071^2 .

It is not an unprimeable number, because it can be changed into a prime (6668017061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59805 + ... + 130048.

Almost surely, 2^6668017066 is an apocalyptic number.

6668017066 is a deficient number, since it is larger than the sum of its proper divisors (3932670878).

6668017066 is a wasteful number, since it uses less digits than its factorization.

6668017066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190905.

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 6668017066 is about 81657.9271473382. The cubic root of 6668017066 is about 1882.1991266254.

The spelling of 6668017066 in words is "six billion, six hundred sixty-eight million, seventeen thousand, sixty-six".