68360813 has 2 divisors, whose sum is σ = 68360814. Its totient is φ = 68360812.

The previous prime is 68360749. The next prime is 68360839. The reversal of 68360813 is 31806386.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63329764 + 5031049 = 7958^2 + 2243^2 .

It is a cyclic number.

It is not a de Polignac number, because 68360813 - 2⁶ = 68360749 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68360863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34180406 + 34180407.

It is an arithmetic number, because the mean of its divisors is an integer number (34180407).

Almost surely, 2^68360813 is an apocalyptic number.

It is an amenable number.

68360813 is a deficient number, since it is larger than the sum of its proper divisors (1).

68360813 is an equidigital number, since it uses as much as digits as its factorization.

68360813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 68360813 is about 8268.0598086855. The cubic root of 68360813 is about 408.8861558275.

The spelling of 68360813 in words is "sixty-eight million, three hundred sixty thousand, eight hundred thirteen".