5605 has 8 divisors (see below), whose sum is σ = 7200. Its totient is φ = 4176.

The previous prime is 5591. The next prime is 5623. The reversal of 5605 is 5065.

5605 = 19² + 20² + ... + 28².

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 5605 - 2⁵ = 5573 is a prime.

It is a plaindrome in base 7.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66 + ... + 124.

It is an arithmetic number, because the mean of its divisors is an integer number (900).

2⁵⁶⁰⁵ is an apocalyptic number.

It is an amenable number.

5605 is a deficient number, since it is larger than the sum of its proper divisors (1595).

5605 is a wasteful number, since it uses less digits than its factorization.

5605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 5605 is about 74.8665479370. The cubic root of 5605 is about 17.7633636055.

It can be divided in two parts, 560 and 5, that added together give a palindrome (565).

The spelling of 5605 in words is "five thousand, six hundred five".