223603 has 4 divisors (see below), whose sum is σ = 230848. Its totient is φ = 216360.

The previous prime is 223589. The next prime is 223621. The reversal of 223603 is 306322.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223603 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (223633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3576 + ... + 3637.

It is an arithmetic number, because the mean of its divisors is an integer number (57712).

2²²³⁶⁰³ is an apocalyptic number.

223603 is a deficient number, since it is larger than the sum of its proper divisors (7245).

223603 is an equidigital number, since it uses as much as digits as its factorization.

223603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7244.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 223603 is about 472.8667888528. The cubic root of 223603 is about 60.6958794757.

Adding to 223603 its reverse (306322), we get a palindrome (529925).

The spelling of 223603 in words is "two hundred twenty-three thousand, six hundred three".