666006606097 has 6 divisors (see below), whose sum is σ = 774742378578. Its totient is φ = 570862805184.

The previous prime is 666006606059. The next prime is 666006606101. The reversal of 666006606097 is 790606600666.

It can be written as a sum of positive squares in only one way, i.e., 415204964496 + 250801641601 = 644364^2 + 500801^2 .

It is not a de Polignac number, because 666006606097 - 2⁷ = 666006605969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (666006606007) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6795985728 + ... + 6795985825.

It is an arithmetic number, because the mean of its divisors is an integer number (129123729763).

Almost surely, 2^666006606097 is an apocalyptic number.

It is an amenable number.

666006606097 is a deficient number, since it is larger than the sum of its proper divisors (108735772481).

666006606097 is a wasteful number, since it uses less digits than its factorization.

666006606097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13591971567 (or 13591971560 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 52.

The spelling of 666006606097 in words is "six hundred sixty-six billion, six million, six hundred six thousand, ninety-seven".