506603 has 4 divisors (see below), whose sum is σ = 510720. Its totient is φ = 502488.

The previous prime is 506599. The next prime is 506609. The reversal of 506603 is 306605.

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 506603 - 2² = 506599 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (506609) 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, 1868 + ... + 2121.

It is an arithmetic number, because the mean of its divisors is an integer number (127680).

2⁵⁰⁶⁶⁰³ is an apocalyptic number.

506603 is a deficient number, since it is larger than the sum of its proper divisors (4117).

506603 is a wasteful number, since it uses less digits than its factorization.

506603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4116.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 506603 is about 711.7604934246. The cubic root of 506603 is about 79.7179127539.

The spelling of 506603 in words is "five hundred six thousand, six hundred three".