605985 has 16 divisors (see below), whose sum is σ = 984960. Its totient is φ = 318080.

The previous prime is 605977. The next prime is 605987. The reversal of 605985 is 589506.

605985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 605985 - 2³ = 605977 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 605985.

It is not an unprimeable number, because it can be changed into a prime (605987) 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, 781 + ... + 1349.

It is an arithmetic number, because the mean of its divisors is an integer number (61560).

2⁶⁰⁵⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

605985 is a deficient number, since it is larger than the sum of its proper divisors (378975).

605985 is a wasteful number, since it uses less digits than its factorization.

605985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 605985 is about 778.4503837754. The cubic root of 605985 is about 84.6227805572.

The spelling of 605985 in words is "six hundred five thousand, nine hundred eighty-five".