518985 has 24 divisors (see below), whose sum is σ = 948480. Its totient is φ = 261792.

The previous prime is 518983. The next prime is 518989. The reversal of 518985 is 589815.

518985 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 518985 - 2¹ = 518983 is a prime.

518985 is strictly pandigital in base 7.

It is not an unprimeable number, because it can be changed into a prime (518981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 552 + ... + 1158.

It is an arithmetic number, because the mean of its divisors is an integer number (39520).

2⁵¹⁸⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

518985 is a deficient number, since it is larger than the sum of its proper divisors (429495).

518985 is a wasteful number, since it uses less digits than its factorization.

518985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637 (or 634 counting only the distinct ones).

The product of its digits is 14400, while the sum is 36.

The square root of 518985 is about 720.4061354542. The cubic root of 518985 is about 80.3621601100.

The spelling of 518985 in words is "five hundred eighteen thousand, nine hundred eighty-five".