673561773 has 12 divisors (see below), whose sum is σ = 973147968. Its totient is φ = 448937160.

The previous prime is 673561753. The next prime is 673561781. The reversal of 673561773 is 377165376.

It is a happy number.

673561773 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 673561773 - 2¹⁰ = 673560749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673561703) 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, 68386 + ... + 77612.

It is an arithmetic number, because the mean of its divisors is an integer number (81095664).

Almost surely, 2^673561773 is an apocalyptic number.

It is an amenable number.

673561773 is a deficient number, since it is larger than the sum of its proper divisors (299586195).

673561773 is a wasteful number, since it uses less digits than its factorization.

673561773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17344 (or 17341 counting only the distinct ones).

The product of its digits is 555660, while the sum is 45.

The square root of 673561773 is about 25953.0686624915. The cubic root of 673561773 is about 876.5818560378.

The spelling of 673561773 in words is "six hundred seventy-three million, five hundred sixty-one thousand, seven hundred seventy-three".