268786013 has 2 divisors, whose sum is σ = 268786014. Its totient is φ = 268786012.

The previous prime is 268786009. The next prime is 268786057. The reversal of 268786013 is 310687862.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142515844 + 126270169 = 11938^2 + 11237^2 .

It is a cyclic number.

It is not a de Polignac number, because 268786013 - 2² = 268786009 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 (268786003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134393006 + 134393007.

It is an arithmetic number, because the mean of its divisors is an integer number (134393007).

Almost surely, 2^268786013 is an apocalyptic number.

It is an amenable number.

268786013 is a deficient number, since it is larger than the sum of its proper divisors (1).

268786013 is an equidigital number, since it uses as much as digits as its factorization.

268786013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 268786013 is about 16394.6946601637. The cubic root of 268786013 is about 645.3602642541.

The spelling of 268786013 in words is "two hundred sixty-eight million, seven hundred eighty-six thousand, thirteen".