268811407 has 2 divisors, whose sum is σ = 268811408. Its totient is φ = 268811406.

The previous prime is 268811393. The next prime is 268811441. The reversal of 268811407 is 704118862.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268811407 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268811507) 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, 134405703 + 134405704.

It is an arithmetic number, because the mean of its divisors is an integer number (134405704).

Almost surely, 2^268811407 is an apocalyptic number.

268811407 is a deficient number, since it is larger than the sum of its proper divisors (1).

268811407 is an equidigital number, since it uses as much as digits as its factorization.

268811407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 268811407 is about 16395.4690997239. The cubic root of 268811407 is about 645.3805874377.

The spelling of 268811407 in words is "two hundred sixty-eight million, eight hundred eleven thousand, four hundred seven".