68610089 has 2 divisors, whose sum is σ = 68610090. Its totient is φ = 68610088.

The previous prime is 68610067. The next prime is 68610107. The reversal of 68610089 is 98001686.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60964864 + 7645225 = 7808^2 + 2765^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68610089 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (68610019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34305044 + 34305045.

It is an arithmetic number, because the mean of its divisors is an integer number (34305045).

Almost surely, 2^68610089 is an apocalyptic number.

It is an amenable number.

68610089 is a deficient number, since it is larger than the sum of its proper divisors (1).

68610089 is an equidigital number, since it uses as much as digits as its factorization.

68610089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 68610089 is about 8283.1207283246. The cubic root of 68610089 is about 409.3825506756.

The spelling of 68610089 in words is "sixty-eight million, six hundred ten thousand, eighty-nine".