68106517 has 2 divisors, whose sum is σ = 68106518. Its totient is φ = 68106516.

The previous prime is 68106503. The next prime is 68106523. The reversal of 68106517 is 71560186.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68046001 + 60516 = 8249^2 + 246^2 .

It is a cyclic number.

It is not a de Polignac number, because 68106517 - 2¹¹ = 68104469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68106527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34053258 + 34053259.

It is an arithmetic number, because the mean of its divisors is an integer number (34053259).

Almost surely, 2^68106517 is an apocalyptic number.

It is an amenable number.

68106517 is a deficient number, since it is larger than the sum of its proper divisors (1).

68106517 is an equidigital number, since it uses as much as digits as its factorization.

68106517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 68106517 is about 8252.6672657996. The cubic root of 68106517 is about 408.3785194292.

The spelling of 68106517 in words is "sixty-eight million, one hundred six thousand, five hundred seventeen".