673730403 has 8 divisors (see below), whose sum is σ = 903326400. Its totient is φ = 446644008.

The previous prime is 673730389. The next prime is 673730411. The reversal of 673730403 is 304037376.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 673730403 - 2⁵ = 673730371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (673730413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 626773 + ... + 627846.

It is an arithmetic number, because the mean of its divisors is an integer number (112915800).

Almost surely, 2^673730403 is an apocalyptic number.

673730403 is a deficient number, since it is larger than the sum of its proper divisors (229595997).

673730403 is a wasteful number, since it uses less digits than its factorization.

673730403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254801.

The product of its (nonzero) digits is 31752, while the sum is 33.

The square root of 673730403 is about 25956.3172079554. The cubic root of 673730403 is about 876.6550023427.

Adding to 673730403 its reverse (304037376), we get a palindrome (977767779).

The spelling of 673730403 in words is "six hundred seventy-three million, seven hundred thirty thousand, four hundred three".