68118293 has 2 divisors, whose sum is σ = 68118294. Its totient is φ = 68118292.

The previous prime is 68118283. The next prime is 68118299. The reversal of 68118293 is 39281186.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42484324 + 25633969 = 6518^2 + 5063^2 .

It is a cyclic number.

It is not a de Polignac number, because 68118293 - 2⁶ = 68118229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68118299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34059146 + 34059147.

It is an arithmetic number, because the mean of its divisors is an integer number (34059147).

Almost surely, 2^68118293 is an apocalyptic number.

It is an amenable number.

68118293 is a deficient number, since it is larger than the sum of its proper divisors (1).

68118293 is an equidigital number, since it uses as much as digits as its factorization.

68118293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 38.

The square root of 68118293 is about 8253.3807012642. The cubic root of 68118293 is about 408.4020550540.

The spelling of 68118293 in words is "sixty-eight million, one hundred eighteen thousand, two hundred ninety-three".