68398543 has 2 divisors, whose sum is σ = 68398544. Its totient is φ = 68398542.

The previous prime is 68398529. The next prime is 68398571. The reversal of 68398543 is 34589386.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68398543 - 2¹⁷ = 68267471 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68398493 and 68398502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68398643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34199271 + 34199272.

It is an arithmetic number, because the mean of its divisors is an integer number (34199272).

Almost surely, 2^68398543 is an apocalyptic number.

68398543 is a deficient number, since it is larger than the sum of its proper divisors (1).

68398543 is an equidigital number, since it uses as much as digits as its factorization.

68398543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 622080, while the sum is 46.

The square root of 68398543 is about 8270.3411658770. The cubic root of 68398543 is about 408.9613667396.

The spelling of 68398543 in words is "sixty-eight million, three hundred ninety-eight thousand, five hundred forty-three".