268128713 has 2 divisors, whose sum is σ = 268128714. Its totient is φ = 268128712.

The previous prime is 268128691. The next prime is 268128739. The reversal of 268128713 is 317821862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 265429264 + 2699449 = 16292^2 + 1643^2 .

It is a cyclic number.

It is not a de Polignac number, because 268128713 - 2¹² = 268124617 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (268128313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134064356 + 134064357.

It is an arithmetic number, because the mean of its divisors is an integer number (134064357).

Almost surely, 2^268128713 is an apocalyptic number.

It is an amenable number.

268128713 is a deficient number, since it is larger than the sum of its proper divisors (1).

268128713 is an equidigital number, since it uses as much as digits as its factorization.

268128713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 38.

The square root of 268128713 is about 16374.6362707695. The cubic root of 268128713 is about 644.8337716379.

The spelling of 268128713 in words is "two hundred sixty-eight million, one hundred twenty-eight thousand, seven hundred thirteen".