605660 has 24 divisors (see below), whose sum is σ = 1388016. Its totient is φ = 220160.

The previous prime is 605641. The next prime is 605687. The reversal of 605660 is 66506.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

605660 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1157 + ... + 1596.

It is an arithmetic number, because the mean of its divisors is an integer number (57834).

2⁶⁰⁵⁶⁶⁰ is an apocalyptic number.

It is an amenable number.

605660 is an abundant number, since it is smaller than the sum of its proper divisors (782356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

605660 is a wasteful number, since it uses less digits than its factorization.

605660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2773 (or 2771 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 605660 is about 778.2416077286. The cubic root of 605660 is about 84.6076496426.

It can be divided in two parts, 6056 and 60, that added together give a palindrome (6116).

The spelling of 605660 in words is "six hundred five thousand, six hundred sixty".