673188689 has 2 divisors, whose sum is σ = 673188690. Its totient is φ = 673188688.

The previous prime is 673188673. The next prime is 673188707. The reversal of 673188689 is 986881376.

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., 620408464 + 52780225 = 24908^2 + 7265^2 .

It is a cyclic number.

It is not a de Polignac number, because 673188689 - 2⁴ = 673188673 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 (673188589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336594344 + 336594345.

It is an arithmetic number, because the mean of its divisors is an integer number (336594345).

Almost surely, 2^673188689 is an apocalyptic number.

It is an amenable number.

673188689 is a deficient number, since it is larger than the sum of its proper divisors (1).

673188689 is an equidigital number, since it uses as much as digits as its factorization.

673188689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3483648, while the sum is 56.

The square root of 673188689 is about 25945.8800004933. The cubic root of 673188689 is about 876.4199807262.

The spelling of 673188689 in words is "six hundred seventy-three million, one hundred eighty-eight thousand, six hundred eighty-nine".