605081 has 4 divisors (see below), whose sum is σ = 640692. Its totient is φ = 569472.

The previous prime is 605071. The next prime is 605113. The reversal of 605081 is 180506.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 225625 + 379456 = 475^2 + 616^2 .

It is a cyclic number.

It is not a de Polignac number, because 605081 - 2¹⁰ = 604057 is a prime.

It is a super-2 number, since 2×605081² = 732246033122, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (605021) 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, 17780 + ... + 17813.

It is an arithmetic number, because the mean of its divisors is an integer number (160173).

2⁶⁰⁵⁰⁸¹ is an apocalyptic number.

It is an amenable number.

605081 is a deficient number, since it is larger than the sum of its proper divisors (35611).

605081 is a wasteful number, since it uses less digits than its factorization.

605081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35610.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 605081 is about 777.8695263346. The cubic root of 605081 is about 84.5806799192.

Adding to 605081 its reverse (180506), we get a palindrome (785587).

The spelling of 605081 in words is "six hundred five thousand, eighty-one".