268686307 has 2 divisors, whose sum is σ = 268686308. Its totient is φ = 268686306.

The previous prime is 268686289. The next prime is 268686311. The reversal of 268686307 is 703686862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 268686307 - 2¹¹ = 268684259 is a prime.

It is not a weakly prime, because it can be changed into another prime (268686337) 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, 134343153 + 134343154.

It is an arithmetic number, because the mean of its divisors is an integer number (134343154).

Almost surely, 2^268686307 is an apocalyptic number.

268686307 is a deficient number, since it is larger than the sum of its proper divisors (1).

268686307 is an equidigital number, since it uses as much as digits as its factorization.

268686307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 46.

The square root of 268686307 is about 16391.6535773545. The cubic root of 268686307 is about 645.2804557256.

The spelling of 268686307 in words is "two hundred sixty-eight million, six hundred eighty-six thousand, three hundred seven".