268410869 has 2 divisors, whose sum is σ = 268410870. Its totient is φ = 268410868.

The previous prime is 268410809. The next prime is 268410899. The reversal of 268410869 is 968014862.

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., 162052900 + 106357969 = 12730^2 + 10313^2 .

It is a cyclic number.

It is not a de Polignac number, because 268410869 - 2²⁴ = 251633653 is a prime.

It is a super-2 number, since 2×268410869² = 144088789194670322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268410809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134205434 + 134205435.

It is an arithmetic number, because the mean of its divisors is an integer number (134205435).

Almost surely, 2^268410869 is an apocalyptic number.

It is an amenable number.

268410869 is a deficient number, since it is larger than the sum of its proper divisors (1).

268410869 is an equidigital number, since it uses as much as digits as its factorization.

268410869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 268410869 is about 16383.2496471243. The cubic root of 268410869 is about 645.0598818670.

The spelling of 268410869 in words is "two hundred sixty-eight million, four hundred ten thousand, eight hundred sixty-nine".