67728943 has 2 divisors, whose sum is σ = 67728944. Its totient is φ = 67728942.

The previous prime is 67728937. The next prime is 67728979. The reversal of 67728943 is 34982776.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67728943 - 2⁹ = 67728431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67728893 and 67728902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67728343) 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, 33864471 + 33864472.

It is an arithmetic number, because the mean of its divisors is an integer number (33864472).

Almost surely, 2^67728943 is an apocalyptic number.

67728943 is a deficient number, since it is larger than the sum of its proper divisors (1).

67728943 is an equidigital number, since it uses as much as digits as its factorization.

67728943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 46.

The square root of 67728943 is about 8229.7595955167. The cubic root of 67728943 is about 407.6224540716.

The spelling of 67728943 in words is "sixty-seven million, seven hundred twenty-eight thousand, nine hundred forty-three".