268812487 has 2 divisors, whose sum is σ = 268812488. Its totient is φ = 268812486.

The previous prime is 268812463. The next prime is 268812529. The reversal of 268812487 is 784218862.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 268812487 - 2¹⁹ = 268288199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268812457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134406243 + 134406244.

It is an arithmetic number, because the mean of its divisors is an integer number (134406244).

Almost surely, 2^268812487 is an apocalyptic number.

268812487 is a deficient number, since it is larger than the sum of its proper divisors (1).

268812487 is an equidigital number, since it uses as much as digits as its factorization.

268812487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 344064, while the sum is 46.

The square root of 268812487 is about 16395.5020356194. The cubic root of 268812487 is about 645.3814517489.

The spelling of 268812487 in words is "two hundred sixty-eight million, eight hundred twelve thousand, four hundred eighty-seven".