605505 has 16 divisors (see below), whose sum is σ = 995904. Its totient is φ = 313920.

The previous prime is 605503. The next prime is 605509. The reversal of 605505 is 505506.

It is not a de Polignac number, because 605505 - 2¹ = 605503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (605503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10 + ... + 1100.

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

2⁶⁰⁵⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

605505 is a deficient number, since it is larger than the sum of its proper divisors (390399).

605505 is a wasteful number, since it uses less digits than its factorization.

605505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136.

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 605505 is about 778.1420178862. The cubic root of 605505 is about 84.6004314539.

Subtracting from 605505 its reverse (505506), we obtain a palindrome (99999).

It can be divided in two parts, 60 and 5505, that added together give a triangular number (5565 = T₁₀₅).

The spelling of 605505 in words is "six hundred five thousand, five hundred five".