68847613 has 2 divisors, whose sum is σ = 68847614. Its totient is φ = 68847612.

The previous prime is 68847607. The next prime is 68847617. The reversal of 68847613 is 31674886.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64673764 + 4173849 = 8042^2 + 2043^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68847613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68847613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68847617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34423806 + 34423807.

It is an arithmetic number, because the mean of its divisors is an integer number (34423807).

Almost surely, 2^68847613 is an apocalyptic number.

It is an amenable number.

68847613 is a deficient number, since it is larger than the sum of its proper divisors (1).

68847613 is an equidigital number, since it uses as much as digits as its factorization.

68847613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 43.

The square root of 68847613 is about 8297.4461733717. The cubic root of 68847613 is about 409.8544258122.

The spelling of 68847613 in words is "sixty-eight million, eight hundred forty-seven thousand, six hundred thirteen".