68047393 has 2 divisors, whose sum is σ = 68047394. Its totient is φ = 68047392.

The previous prime is 68047367. The next prime is 68047423. The reversal of 68047393 is 39374086.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64448784 + 3598609 = 8028^2 + 1897^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68047393 is a prime.

It is not a weakly prime, because it can be changed into another prime (68047313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34023696 + 34023697.

It is an arithmetic number, because the mean of its divisors is an integer number (34023697).

Almost surely, 2^68047393 is an apocalyptic number.

It is an amenable number.

68047393 is a deficient number, since it is larger than the sum of its proper divisors (1).

68047393 is an equidigital number, since it uses as much as digits as its factorization.

68047393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 68047393 is about 8249.0843734320. The cubic root of 68047393 is about 408.2603126219.

The spelling of 68047393 in words is "sixty-eight million, forty-seven thousand, three hundred ninety-three".