518664 has 16 divisors (see below), whose sum is σ = 1296720. Its totient is φ = 172880.

The previous prime is 518657. The next prime is 518689. The reversal of 518664 is 466815.

518664 = T₂ + T₃ + ... + T₁₄₅.

518664 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

518664 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10782 + ... + 10829.

It is an arithmetic number, because the mean of its divisors is an integer number (81045).

2⁵¹⁸⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

518664 is an abundant number, since it is smaller than the sum of its proper divisors (778056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

518664 is a wasteful number, since it uses less digits than its factorization.

518664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21620 (or 21616 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 518664 is about 720.1833099982. The cubic root of 518664 is about 80.3455882928.

The spelling of 518664 in words is "five hundred eighteen thousand, six hundred sixty-four".