8128117 has 2 divisors, whose sum is σ = 8128118. Its totient is φ = 8128116.

The previous prime is 8128111. The next prime is 8128129. The reversal of 8128117 is 7118218.

8128117 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7017201 + 1110916 = 2649^2 + 1054^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8128117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8128111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4064058 + 4064059.

It is an arithmetic number, because the mean of its divisors is an integer number (4064059).

Almost surely, 2^8128117 is an apocalyptic number.

It is an amenable number.

8128117 is a deficient number, since it is larger than the sum of its proper divisors (1).

8128117 is an equidigital number, since it uses as much as digits as its factorization.

8128117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 896, while the sum is 28.

The square root of 8128117 is about 2850.9852682888. The cubic root of 8128117 is about 201.0619925446.

The spelling of 8128117 in words is "eight million, one hundred twenty-eight thousand, one hundred seventeen".