605311 has 8 divisors (see below), whose sum is σ = 708224. Its totient is φ = 506520.

The previous prime is 605309. The next prime is 605323. The reversal of 605311 is 113506.

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

It is not a de Polignac number, because 605311 - 2¹ = 605309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (605411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 705 + ... + 1306.

It is an arithmetic number, because the mean of its divisors is an integer number (88528).

2⁶⁰⁵³¹¹ is an apocalyptic number.

605311 is a deficient number, since it is larger than the sum of its proper divisors (102913).

605311 is a wasteful number, since it uses less digits than its factorization.

605311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2061.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 605311 is about 778.0173519916. The cubic root of 605311 is about 84.5913953397.

Adding to 605311 its reverse (113506), we get a palindrome (718817).

The spelling of 605311 in words is "six hundred five thousand, three hundred eleven".