8666334401 has 2 divisors, whose sum is σ = 8666334402. Its totient is φ = 8666334400.

The previous prime is 8666334343. The next prime is 8666334403. The reversal of 8666334401 is 1044336668.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6741231025 + 1925103376 = 82105^2 + 43876^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8666334401 is a prime.

Together with 8666334403, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8666334403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4333167200 + 4333167201.

It is an arithmetic number, because the mean of its divisors is an integer number (4333167201).

Almost surely, 2^8666334401 is an apocalyptic number.

It is an amenable number.

8666334401 is a deficient number, since it is larger than the sum of its proper divisors (1).

8666334401 is an equidigital number, since it uses as much as digits as its factorization.

8666334401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 41.

The square root of 8666334401 is about 93093.1490551265. The cubic root of 8666334401 is about 2054.0537989036.

The spelling of 8666334401 in words is "eight billion, six hundred sixty-six million, three hundred thirty-four thousand, four hundred one".