8668157 has 2 divisors, whose sum is σ = 8668158. Its totient is φ = 8668156.

The previous prime is 8668151. The next prime is 8668193. The reversal of 8668157 is 7518668.

8668157 is digitally balanced in base 2, 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., 6421156 + 2247001 = 2534^2 + 1499^2 .

It is a cyclic number.

It is not a de Polignac number, because 8668157 - 2⁴ = 8668141 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8668151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4334078 + 4334079.

It is an arithmetic number, because the mean of its divisors is an integer number (4334079).

Almost surely, 2^8668157 is an apocalyptic number.

It is an amenable number.

8668157 is a deficient number, since it is larger than the sum of its proper divisors (1).

8668157 is an equidigital number, since it uses as much as digits as its factorization.

8668157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 41.

The square root of 8668157 is about 2944.1733984261. The cubic root of 8668157 is about 205.4197783423.

The spelling of 8668157 in words is "eight million, six hundred sixty-eight thousand, one hundred fifty-seven".