68219017 has 2 divisors, whose sum is σ = 68219018. Its totient is φ = 68219016.

The previous prime is 68218981. The next prime is 68219023. The reversal of 68219017 is 71091286.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60512841 + 7706176 = 7779^2 + 2776^2 .

It is a cyclic number.

It is not a de Polignac number, because 68219017 - 2⁷ = 68218889 is a prime.

It is not a weakly prime, because it can be changed into another prime (68219087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34109508 + 34109509.

It is an arithmetic number, because the mean of its divisors is an integer number (34109509).

Almost surely, 2^68219017 is an apocalyptic number.

It is an amenable number.

68219017 is a deficient number, since it is larger than the sum of its proper divisors (1).

68219017 is an equidigital number, since it uses as much as digits as its factorization.

68219017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 68219017 is about 8259.4804316010. The cubic root of 68219017 is about 408.6032522560.

The spelling of 68219017 in words is "sixty-eight million, two hundred nineteen thousand, seventeen".