68119613 has 2 divisors, whose sum is σ = 68119614. Its totient is φ = 68119612.

The previous prime is 68119609. The next prime is 68119651. The reversal of 68119613 is 31691186.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55995289 + 12124324 = 7483^2 + 3482^2 .

It is a cyclic number.

It is not a de Polignac number, because 68119613 - 2² = 68119609 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68119673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34059806 + 34059807.

It is an arithmetic number, because the mean of its divisors is an integer number (34059807).

Almost surely, 2^68119613 is an apocalyptic number.

It is an amenable number.

68119613 is a deficient number, since it is larger than the sum of its proper divisors (1).

68119613 is an equidigital number, since it uses as much as digits as its factorization.

68119613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 35.

The square root of 68119613 is about 8253.4606681077. The cubic root of 68119613 is about 408.4046930494.

The spelling of 68119613 in words is "sixty-eight million, one hundred nineteen thousand, six hundred thirteen".