268648169 has 2 divisors, whose sum is σ = 268648170. Its totient is φ = 268648168.

The previous prime is 268648147. The next prime is 268648187. The reversal of 268648169 is 961846862.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201980944 + 66667225 = 14212^2 + 8165^2 .

It is a cyclic number.

It is not a de Polignac number, because 268648169 - 2¹² = 268644073 is a prime.

It is a super-2 number, since 2×268648169² = 144343677414105122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (268648109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134324084 + 134324085.

It is an arithmetic number, because the mean of its divisors is an integer number (134324085).

Almost surely, 2^268648169 is an apocalyptic number.

It is an amenable number.

268648169 is a deficient number, since it is larger than the sum of its proper divisors (1).

268648169 is an equidigital number, since it uses as much as digits as its factorization.

268648169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 995328, while the sum is 50.

The square root of 268648169 is about 16390.4902001130. The cubic root of 268648169 is about 645.2499233788.

The spelling of 268648169 in words is "two hundred sixty-eight million, six hundred forty-eight thousand, one hundred sixty-nine".