68084789 has 2 divisors, whose sum is σ = 68084790. Its totient is φ = 68084788.

The previous prime is 68084759. The next prime is 68084839. The reversal of 68084789 is 98748086.

It is an a-pointer prime, because the next prime (68084839) can be obtained adding 68084789 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67782289 + 302500 = 8233^2 + 550^2 .

It is a cyclic number.

It is not a de Polignac number, because 68084789 - 2¹⁶ = 68019253 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68084729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34042394 + 34042395.

It is an arithmetic number, because the mean of its divisors is an integer number (34042395).

Almost surely, 2^68084789 is an apocalyptic number.

It is an amenable number.

68084789 is a deficient number, since it is larger than the sum of its proper divisors (1).

68084789 is an equidigital number, since it uses as much as digits as its factorization.

68084789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 774144, while the sum is 50.

The square root of 68084789 is about 8251.3507379095. The cubic root of 68084789 is about 408.3350865212.

The spelling of 68084789 in words is "sixty-eight million, eighty-four thousand, seven hundred eighty-nine".