673400773 has 2 divisors, whose sum is σ = 673400774. Its totient is φ = 673400772.

The previous prime is 673400737. The next prime is 673400779. The reversal of 673400773 is 377004376.

Together with previous prime (673400737) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 606045924 + 67354849 = 24618^2 + 8207^2 .

It is a cyclic number.

It is not a de Polignac number, because 673400773 - 2²¹ = 671303621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (673400779) 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, 336700386 + 336700387.

It is an arithmetic number, because the mean of its divisors is an integer number (336700387).

Almost surely, 2^673400773 is an apocalyptic number.

It is an amenable number.

673400773 is a deficient number, since it is larger than the sum of its proper divisors (1).

673400773 is an equidigital number, since it uses as much as digits as its factorization.

673400773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 74088, while the sum is 37.

The square root of 673400773 is about 25949.9667244488. The cubic root of 673400773 is about 876.5120079899.

The spelling of 673400773 in words is "six hundred seventy-three million, four hundred thousand, seven hundred seventy-three".