11668157 has 2 divisors, whose sum is σ = 11668158. Its totient is φ = 11668156.

The previous prime is 11668127. The next prime is 11668159. The reversal of 11668157 is 75186611.

11668157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10201636 + 1466521 = 3194^2 + 1211^2 .

It is a cyclic number.

It is not a de Polignac number, because 11668157 - 2¹⁰ = 11667133 is a prime.

It is a super-2 number, since 2×11668157² = 272291775553298, which contains 22 as substring.

Together with 11668159, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11668159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5834078 + 5834079.

It is an arithmetic number, because the mean of its divisors is an integer number (5834079).

Almost surely, 2^11668157 is an apocalyptic number.

It is an amenable number.

11668157 is a deficient number, since it is larger than the sum of its proper divisors (1).

11668157 is an equidigital number, since it uses as much as digits as its factorization.

11668157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 35.

The square root of 11668157 is about 3415.8684108144. The cubic root of 11668157 is about 226.8127276113.

The spelling of 11668157 in words is "eleven million, six hundred sixty-eight thousand, one hundred fifty-seven".