673733789 has 2 divisors, whose sum is σ = 673733790. Its totient is φ = 673733788.

The previous prime is 673733759. The next prime is 673733807. The reversal of 673733789 is 987337376.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 497959225 + 175774564 = 22315^2 + 13258^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-673733789 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 673733789.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (673733719) 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, 336866894 + 336866895.

It is an arithmetic number, because the mean of its divisors is an integer number (336866895).

Almost surely, 2^673733789 is an apocalyptic number.

It is an amenable number.

673733789 is a deficient number, since it is larger than the sum of its proper divisors (1).

673733789 is an equidigital number, since it uses as much as digits as its factorization.

673733789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4000752, while the sum is 53.

The square root of 673733789 is about 25956.3824328430. The cubic root of 673733789 is about 876.6564709563.

The spelling of 673733789 in words is "six hundred seventy-three million, seven hundred thirty-three thousand, seven hundred eighty-nine".