68518727 has 2 divisors, whose sum is σ = 68518728. Its totient is φ = 68518726.

The previous prime is 68518699. The next prime is 68518739. The reversal of 68518727 is 72781586.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68518727 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 (68518777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34259363 + 34259364.

It is an arithmetic number, because the mean of its divisors is an integer number (34259364).

Almost surely, 2^68518727 is an apocalyptic number.

68518727 is a deficient number, since it is larger than the sum of its proper divisors (1).

68518727 is an equidigital number, since it uses as much as digits as its factorization.

68518727 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 188160, while the sum is 44.

The square root of 68518727 is about 8277.6039407548. The cubic root of 68518727 is about 409.2007570886.

The spelling of 68518727 in words is "sixty-eight million, five hundred eighteen thousand, seven hundred twenty-seven".