67104689 has 2 divisors, whose sum is σ = 67104690. Its totient is φ = 67104688.

The previous prime is 67104679. The next prime is 67104691. The reversal of 67104689 is 98640176.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42354064 + 24750625 = 6508^2 + 4975^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67104689 is a prime.

Together with 67104691, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (67104649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33552344 + 33552345.

It is an arithmetic number, because the mean of its divisors is an integer number (33552345).

Almost surely, 2^67104689 is an apocalyptic number.

It is an amenable number.

67104689 is a deficient number, since it is larger than the sum of its proper divisors (1).

67104689 is an equidigital number, since it uses as much as digits as its factorization.

67104689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 67104689 is about 8191.7451742593. The cubic root of 67104689 is about 406.3662419550.

The spelling of 67104689 in words is "sixty-seven million, one hundred four thousand, six hundred eighty-nine".