268641479 has 2 divisors, whose sum is σ = 268641480. Its totient is φ = 268641478.

The previous prime is 268641469. The next prime is 268641481. The reversal of 268641479 is 974146862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 268641479 - 2⁸ = 268641223 is a prime.

Together with 268641481, 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 (268641419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134320739 + 134320740.

It is an arithmetic number, because the mean of its divisors is an integer number (134320740).

Almost surely, 2^268641479 is an apocalyptic number.

268641479 is a deficient number, since it is larger than the sum of its proper divisors (1).

268641479 is an equidigital number, since it uses as much as digits as its factorization.

268641479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 47.

The square root of 268641479 is about 16390.2861170878. The cubic root of 268641479 is about 645.2445672311.

The spelling of 268641479 in words is "two hundred sixty-eight million, six hundred forty-one thousand, four hundred seventy-nine".