268505903 has 2 divisors, whose sum is σ = 268505904. Its totient is φ = 268505902.

The previous prime is 268505879. The next prime is 268505921. The reversal of 268505903 is 309505862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 268505903 - 2¹⁰ = 268504879 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268502903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134252951 + 134252952.

It is an arithmetic number, because the mean of its divisors is an integer number (134252952).

Almost surely, 2^268505903 is an apocalyptic number.

268505903 is a deficient number, since it is larger than the sum of its proper divisors (1).

268505903 is an equidigital number, since it uses as much as digits as its factorization.

268505903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 268505903 is about 16386.1497307940. The cubic root of 268505903 is about 645.1360032098.

The spelling of 268505903 in words is "two hundred sixty-eight million, five hundred five thousand, nine hundred three".