505860 has 24 divisors (see below), whose sum is σ = 1416576. Its totient is φ = 134880.

The previous prime is 505823. The next prime is 505867. The reversal of 505860 is 68505.

It is a self number, because there is not a number n which added to its sum of digits gives 505860.

It is not an unprimeable number, because it can be changed into a prime (505867) by changing a digit.

505860 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 7 ways as a sum of consecutive naturals, for example, 4156 + ... + 4275.

It is an arithmetic number, because the mean of its divisors is an integer number (59024).

2⁵⁰⁵⁸⁶⁰ is an apocalyptic number.

It is an amenable number.

505860 is an abundant number, since it is smaller than the sum of its proper divisors (910716).

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

505860 is a wasteful number, since it uses less digits than its factorization.

505860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8443 (or 8441 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 505860 is about 711.2383566710. The cubic root of 505860 is about 79.6789214141.

The spelling of 505860 in words is "five hundred five thousand, eight hundred sixty".