68443217 has 2 divisors, whose sum is σ = 68443218. Its totient is φ = 68443216.

The previous prime is 68443213. The next prime is 68443259. The reversal of 68443217 is 71234486.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45104656 + 23338561 = 6716^2 + 4831^2 .

It is a cyclic number.

It is not a de Polignac number, because 68443217 - 2² = 68443213 is a prime.

It is not a weakly prime, because it can be changed into another prime (68443213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34221608 + 34221609.

It is an arithmetic number, because the mean of its divisors is an integer number (34221609).

Almost surely, 2^68443217 is an apocalyptic number.

It is an amenable number.

68443217 is a deficient number, since it is larger than the sum of its proper divisors (1).

68443217 is an equidigital number, since it uses as much as digits as its factorization.

68443217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 35.

The square root of 68443217 is about 8273.0415809423. The cubic root of 68443217 is about 409.0503840545.

The spelling of 68443217 in words is "sixty-eight million, four hundred forty-three thousand, two hundred seventeen".