268455613 has 2 divisors, whose sum is σ = 268455614. Its totient is φ = 268455612.

The previous prime is 268455601. The next prime is 268455623. The reversal of 268455613 is 316554862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 263672644 + 4782969 = 16238^2 + 2187^2 .

It is a cyclic number.

It is not a de Polignac number, because 268455613 - 2⁹ = 268455101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268455623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134227806 + 134227807.

It is an arithmetic number, because the mean of its divisors is an integer number (134227807).

Almost surely, 2^268455613 is an apocalyptic number.

It is an amenable number.

268455613 is a deficient number, since it is larger than the sum of its proper divisors (1).

268455613 is an equidigital number, since it uses as much as digits as its factorization.

268455613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 40.

The square root of 268455613 is about 16384.6151312748. The cubic root of 268455613 is about 645.0957236293.

The spelling of 268455613 in words is "two hundred sixty-eight million, four hundred fifty-five thousand, six hundred thirteen".