68744089 has 2 divisors, whose sum is σ = 68744090. Its totient is φ = 68744088.

The previous prime is 68744083. The next prime is 68744099. The reversal of 68744089 is 98044786.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54243225 + 14500864 = 7365^2 + 3808^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68744089 is a prime.

It is not a weakly prime, because it can be changed into another prime (68744083) 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, 34372044 + 34372045.

It is an arithmetic number, because the mean of its divisors is an integer number (34372045).

Almost surely, 2^68744089 is an apocalyptic number.

It is an amenable number.

68744089 is a deficient number, since it is larger than the sum of its proper divisors (1).

68744089 is an equidigital number, since it uses as much as digits as its factorization.

68744089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 68744089 is about 8291.2055215150. The cubic root of 68744089 is about 409.6488943383.

Adding to 68744089 its product of nonzero digits (387072), we get a triangular number (69131161 = T₁₁₇₅₈).

The spelling of 68744089 in words is "sixty-eight million, seven hundred forty-four thousand, eighty-nine".