673105613 has 4 divisors (see below), whose sum is σ = 673557948. Its totient is φ = 672653280.

The previous prime is 673105577. The next prime is 673105619. The reversal of 673105613 is 316501376.

673105613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 385022884 + 288082729 = 19622^2 + 16973^2 .

It is a cyclic number.

It is not a de Polignac number, because 673105613 - 2⁶ = 673105549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 673105613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673105619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223928 + ... + 226913.

It is an arithmetic number, because the mean of its divisors is an integer number (168389487).

Almost surely, 2^673105613 is an apocalyptic number.

It is an amenable number.

673105613 is a deficient number, since it is larger than the sum of its proper divisors (452335).

673105613 is a wasteful number, since it uses less digits than its factorization.

673105613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452334.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 673105613 is about 25944.2790032793. The cubic root of 673105613 is about 876.3839272082.

Adding to 673105613 its reverse (316501376), we get a palindrome (989606989).

The spelling of 673105613 in words is "six hundred seventy-three million, one hundred five thousand, six hundred thirteen".