68071943 has 2 divisors, whose sum is σ = 68071944. Its totient is φ = 68071942.

The previous prime is 68071937. The next prime is 68071957. The reversal of 68071943 is 34917086.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68071943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68071897 and 68071906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68071643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34035971 + 34035972.

It is an arithmetic number, because the mean of its divisors is an integer number (34035972).

Almost surely, 2^68071943 is an apocalyptic number.

68071943 is a deficient number, since it is larger than the sum of its proper divisors (1).

68071943 is an equidigital number, since it uses as much as digits as its factorization.

68071943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 68071943 is about 8250.5722831813. The cubic root of 68071943 is about 408.3094038270.

The spelling of 68071943 in words is "sixty-eight million, seventy-one thousand, nine hundred forty-three".