605005 has 4 divisors (see below), whose sum is σ = 726012. Its totient is φ = 484000.

The previous prime is 604997. The next prime is 605009. The reversal of 605005 is 500506.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 500506 = 2 ⋅250253.

It can be written as a sum of positive squares in 2 ways, for example, as 276676 + 328329 = 526^2 + 573^2 .

It is not a de Polignac number, because 605005 - 2³ = 604997 is a prime.

It is a Duffinian number.

605005 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 605005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (605009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60496 + ... + 60505.

It is an arithmetic number, because the mean of its divisors is an integer number (181503).

2⁶⁰⁵⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

605005 is a deficient number, since it is larger than the sum of its proper divisors (121007).

605005 is a wasteful number, since it uses less digits than its factorization.

605005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121006.

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

The square root of 605005 is about 777.8206734203. The cubic root of 605005 is about 84.5771385747.

It can be divided in two parts, 60500 and 5, that multiplied together give a square (302500 = 550²).

The spelling of 605005 in words is "six hundred five thousand, five".