268506839 has 2 divisors, whose sum is σ = 268506840. Its totient is φ = 268506838.

The previous prime is 268506809. The next prime is 268506883. The reversal of 268506839 is 938605862.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268506839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 268506793 and 268506802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268506809) 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, 134253419 + 134253420.

It is an arithmetic number, because the mean of its divisors is an integer number (134253420).

Almost surely, 2^268506839 is an apocalyptic number.

268506839 is a deficient number, since it is larger than the sum of its proper divisors (1).

268506839 is an equidigital number, since it uses as much as digits as its factorization.

268506839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 622080, while the sum is 47.

The square root of 268506839 is about 16386.1782914748. The cubic root of 268506839 is about 645.1367528477.

The spelling of 268506839 in words is "two hundred sixty-eight million, five hundred six thousand, eight hundred thirty-nine".