605591 has 12 divisors (see below), whose sum is σ = 746928. Its totient is φ = 487872.

The previous prime is 605573. The next prime is 605593. The reversal of 605591 is 195506.

It is not a de Polignac number, because 605591 - 2¹⁴ = 589207 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 605591.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 605591.

It is not an unprimeable number, because it can be changed into a prime (605593) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 470 + ... + 1196.

It is an arithmetic number, because the mean of its divisors is an integer number (62244).

2⁶⁰⁵⁵⁹¹ is an apocalyptic number.

605591 is a deficient number, since it is larger than the sum of its proper divisors (141337).

605591 is a wasteful number, since it uses less digits than its factorization.

605591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758 (or 751 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 605591 is about 778.1972757598. The cubic root of 605591 is about 84.6044365365.

The spelling of 605591 in words is "six hundred five thousand, five hundred ninety-one".