673503 has 4 divisors (see below), whose sum is σ = 898008. Its totient is φ = 449000.

The previous prime is 673499. The next prime is 673513. The reversal of 673503 is 305376.

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

It is a cyclic number.

It is not a de Polignac number, because 673503 - 2² = 673499 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673513) 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, 112248 + ... + 112253.

It is an arithmetic number, because the mean of its divisors is an integer number (224502).

2⁶⁷³⁵⁰³ is an apocalyptic number.

673503 is a deficient number, since it is larger than the sum of its proper divisors (224505).

673503 is a wasteful number, since it uses less digits than its factorization.

673503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224504.

The product of its (nonzero) digits is 1890, while the sum is 24.

The square root of 673503 is about 820.6722853856. The cubic root of 673503 is about 87.6556359320.

Adding to 673503 its reverse (305376), we get a palindrome (978879).

It can be divided in two parts, 673 and 503, that added together give a triangular number (1176 = T₄₈).

The spelling of 673503 in words is "six hundred seventy-three thousand, five hundred three".