68018287 has 2 divisors, whose sum is σ = 68018288. Its totient is φ = 68018286.

The previous prime is 68018281. The next prime is 68018317. The reversal of 68018287 is 78281086.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68018287 - 2²³ = 59629679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68018281) 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, 34009143 + 34009144.

It is an arithmetic number, because the mean of its divisors is an integer number (34009144).

Almost surely, 2^68018287 is an apocalyptic number.

68018287 is a deficient number, since it is larger than the sum of its proper divisors (1).

68018287 is an equidigital number, since it uses as much as digits as its factorization.

68018287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 68018287 is about 8247.3199889419. The cubic root of 68018287 is about 408.2020957490.

The spelling of 68018287 in words is "sixty-eight million, eighteen thousand, two hundred eighty-seven".