673945443 has 12 divisors (see below), whose sum is σ = 974561848. Its totient is φ = 448796160.

The previous prime is 673945387. The next prime is 673945451. The reversal of 673945443 is 344549376.

673945443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 673945443 - 2¹⁴ = 673929059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (673945463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33118 + ... + 49443.

Almost surely, 2^673945443 is an apocalyptic number.

673945443 is a deficient number, since it is larger than the sum of its proper divisors (300616405).

673945443 is a wasteful number, since it uses less digits than its factorization.

673945443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83474 (or 83471 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 45.

The square root of 673945443 is about 25960.4592216702. The cubic root of 673945443 is about 876.7482621183.

The spelling of 673945443 in words is "six hundred seventy-three million, nine hundred forty-five thousand, four hundred forty-three".