268001287 has 2 divisors, whose sum is σ = 268001288. Its totient is φ = 268001286.

The previous prime is 268001281. The next prime is 268001299. The reversal of 268001287 is 782100862.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268001287 is a prime.

268001287 is a modest number, since divided by 1287 gives 268 as remainder.

It is equal to p_14608519 and since 268001287 and 14608519 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268001281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134000643 + 134000644.

It is an arithmetic number, because the mean of its divisors is an integer number (134000644).

Almost surely, 2^268001287 is an apocalyptic number.

268001287 is a deficient number, since it is larger than the sum of its proper divisors (1).

268001287 is an equidigital number, since it uses as much as digits as its factorization.

268001287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 268001287 is about 16370.7448517164. The cubic root of 268001287 is about 644.7316047751.

The spelling of 268001287 in words is "two hundred sixty-eight million, one thousand, two hundred eighty-seven".