18068717 has 2 divisors, whose sum is σ = 18068718. Its totient is φ = 18068716.

The previous prime is 18068693. The next prime is 18068723. The reversal of 18068717 is 71786081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17522596 + 546121 = 4186^2 + 739^2 .

It is a cyclic number.

It is not a de Polignac number, because 18068717 - 2¹⁸ = 17806573 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 (18068747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9034358 + 9034359.

It is an arithmetic number, because the mean of its divisors is an integer number (9034359).

Almost surely, 2^18068717 is an apocalyptic number.

It is an amenable number.

18068717 is a deficient number, since it is larger than the sum of its proper divisors (1).

18068717 is an equidigital number, since it uses as much as digits as its factorization.

18068717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 38.

The square root of 18068717 is about 4250.7313488387. The cubic root of 18068717 is about 262.4072149777.

The spelling of 18068717 in words is "eighteen million, sixty-eight thousand, seven hundred seventeen".