73603 has 4 divisors (see below), whose sum is σ = 74520. Its totient is φ = 72688.

The previous prime is 73597. The next prime is 73607. The reversal of 73603 is 30637.

It is a happy number.

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 73603 - 2⁵ = 73571 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 (73607) 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, 325 + ... + 502.

It is an arithmetic number, because the mean of its divisors is an integer number (18630).

2⁷³⁶⁰³ is an apocalyptic number.

73603 is a deficient number, since it is larger than the sum of its proper divisors (917).

73603 is an equidigital number, since it uses as much as digits as its factorization.

73603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916.

The product of its (nonzero) digits is 378, while the sum is 19.

The square root of 73603 is about 271.2987283420. The cubic root of 73603 is about 41.9081515156.

It can be divided in two parts, 73 and 603, that added together give a palindrome (676).

The spelling of 73603 in words is "seventy-three thousand, six hundred three".