68544943 has 2 divisors, whose sum is σ = 68544944. Its totient is φ = 68544942.

The previous prime is 68544887. The next prime is 68544997. The reversal of 68544943 is 34944586.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68544943 - 2¹³ = 68536751 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68544943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68544643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34272471 + 34272472.

It is an arithmetic number, because the mean of its divisors is an integer number (34272472).

Almost surely, 2^68544943 is an apocalyptic number.

68544943 is a deficient number, since it is larger than the sum of its proper divisors (1).

68544943 is an equidigital number, since it uses as much as digits as its factorization.

68544943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 414720, while the sum is 43.

The square root of 68544943 is about 8279.1873393468. The cubic root of 68544943 is about 409.2529386339.

The spelling of 68544943 in words is "sixty-eight million, five hundred forty-four thousand, nine hundred forty-three".