240585 has 16 divisors (see below), whose sum is σ = 394944. Its totient is φ = 124992.

The previous prime is 240571. The next prime is 240587. The reversal of 240585 is 585042.

It is not a de Polignac number, because 240585 - 2⁹ = 240073 is a prime.

It is a super-2 number, since 2×240585² = 115762284450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240587) 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 15 ways as a sum of consecutive naturals, for example, 459 + ... + 831.

It is an arithmetic number, because the mean of its divisors is an integer number (24684).

2²⁴⁰⁵⁸⁵ is an apocalyptic number.

It is an amenable number.

240585 is a deficient number, since it is larger than the sum of its proper divisors (154359).

240585 is a wasteful number, since it uses less digits than its factorization.

240585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 240585 is about 490.4946482888. The cubic root of 240585 is about 62.1951016776.

The spelling of 240585 in words is "two hundred forty thousand, five hundred eighty-five".