68033947 has 2 divisors, whose sum is σ = 68033948. Its totient is φ = 68033946.

The previous prime is 68033923. The next prime is 68033969. The reversal of 68033947 is 74933086.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68033947 is a prime.

It is not a weakly prime, because it can be changed into another prime (68030947) 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, 34016973 + 34016974.

It is an arithmetic number, because the mean of its divisors is an integer number (34016974).

Almost surely, 2^68033947 is an apocalyptic number.

68033947 is a deficient number, since it is larger than the sum of its proper divisors (1).

68033947 is an equidigital number, since it uses as much as digits as its factorization.

68033947 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 68033947 is about 8248.2693336239. The cubic root of 68033947 is about 408.2334204343.

The spelling of 68033947 in words is "sixty-eight million, thirty-three thousand, nine hundred forty-seven".