673637973 has 4 divisors (see below), whose sum is σ = 898183968. Its totient is φ = 449091980.

The previous prime is 673637933. The next prime is 673637999. The reversal of 673637973 is 379736376.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 673637973 - 2¹⁶ = 673572437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673637933) 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, 112272993 + ... + 112272998.

It is an arithmetic number, because the mean of its divisors is an integer number (224545992).

Almost surely, 2^673637973 is an apocalyptic number.

It is an amenable number.

673637973 is a deficient number, since it is larger than the sum of its proper divisors (224545995).

673637973 is a wasteful number, since it uses less digits than its factorization.

673637973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224545994.

The product of its digits is 3000564, while the sum is 51.

The square root of 673637973 is about 25954.5366554674. The cubic root of 673637973 is about 876.6149106743.

The spelling of 673637973 in words is "six hundred seventy-three million, six hundred thirty-seven thousand, nine hundred seventy-three".