68448517 has 2 divisors, whose sum is σ = 68448518. Its totient is φ = 68448516.

The previous prime is 68448503. The next prime is 68448521. The reversal of 68448517 is 71584486.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55264356 + 13184161 = 7434^2 + 3631^2 .

It is a cyclic number.

It is not a de Polignac number, because 68448517 - 2¹⁹ = 67924229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68448577) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34224258 + 34224259.

It is an arithmetic number, because the mean of its divisors is an integer number (34224259).

Almost surely, 2^68448517 is an apocalyptic number.

It is an amenable number.

68448517 is a deficient number, since it is larger than the sum of its proper divisors (1).

68448517 is an equidigital number, since it uses as much as digits as its factorization.

68448517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 215040, while the sum is 43.

The square root of 68448517 is about 8273.3618922419. The cubic root of 68448517 is about 409.0609422524.

The spelling of 68448517 in words is "sixty-eight million, four hundred forty-eight thousand, five hundred seventeen".