673517789 has 6 divisors (see below), whose sum is σ = 783479934. Its totient is φ = 577300920.

The previous prime is 673517777. The next prime is 673517791. The reversal of 673517789 is 987715376.

It can be written as a sum of positive squares in only one way, i.e., 617522500 + 55995289 = 24850^2 + 7483^2 .

It is not a de Polignac number, because 673517789 - 2²⁸ = 405082333 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 673517789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673517989) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6872582 + ... + 6872679.

It is an arithmetic number, because the mean of its divisors is an integer number (130579989).

Almost surely, 2^673517789 is an apocalyptic number.

It is an amenable number.

673517789 is a deficient number, since it is larger than the sum of its proper divisors (109962145).

673517789 is a wasteful number, since it uses less digits than its factorization.

673517789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13745275 (or 13745268 counting only the distinct ones).

The product of its digits is 2222640, while the sum is 53.

The square root of 673517789 is about 25952.2212729469. The cubic root of 673517789 is about 876.5627751769.

The spelling of 673517789 in words is "six hundred seventy-three million, five hundred seventeen thousand, seven hundred eighty-nine".