68611217 has 2 divisors, whose sum is σ = 68611218. Its totient is φ = 68611216.

The previous prime is 68611199. The next prime is 68611247. The reversal of 68611217 is 71211686.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65545216 + 3066001 = 8096^2 + 1751^2 .

It is a cyclic number.

It is not a de Polignac number, because 68611217 - 2¹⁴ = 68594833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68611247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34305608 + 34305609.

It is an arithmetic number, because the mean of its divisors is an integer number (34305609).

Almost surely, 2^68611217 is an apocalyptic number.

It is an amenable number.

68611217 is a deficient number, since it is larger than the sum of its proper divisors (1).

68611217 is an equidigital number, since it uses as much as digits as its factorization.

68611217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 32.

The square root of 68611217 is about 8283.1888183235. The cubic root of 68611217 is about 409.3847941794.

The spelling of 68611217 in words is "sixty-eight million, six hundred eleven thousand, two hundred seventeen".