673736737 has 4 divisors (see below), whose sum is σ = 691945876. Its totient is φ = 655527600.

The previous prime is 673736717. The next prime is 673736759. The reversal of 673736737 is 737637376.

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 600446016 + 73290721 = 24504^2 + 8561^2 .

It is a cyclic number.

It is not a de Polignac number, because 673736737 - 2¹¹ = 673734689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (673736717) 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, 9104514 + ... + 9104587.

It is an arithmetic number, because the mean of its divisors is an integer number (172986469).

Almost surely, 2^673736737 is an apocalyptic number.

It is an amenable number.

673736737 is a deficient number, since it is larger than the sum of its proper divisors (18209139).

673736737 is a wasteful number, since it uses less digits than its factorization.

673736737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18209138.

The product of its digits is 2333772, while the sum is 49.

The square root of 673736737 is about 25956.4392203553. The cubic root of 673736737 is about 876.6577495916.

The spelling of 673736737 in words is "six hundred seventy-three million, seven hundred thirty-six thousand, seven hundred thirty-seven".