505608 has 16 divisors (see below), whose sum is σ = 1264080. Its totient is φ = 168528.

The previous prime is 505607. The next prime is 505613. The reversal of 505608 is 806505.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 21067 = 505608 / (5 + 0 + 5 + 6 + 0 + 8).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (505601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10510 + ... + 10557.

It is an arithmetic number, because the mean of its divisors is an integer number (79005).

2⁵⁰⁵⁶⁰⁸ is an apocalyptic number.

It is an amenable number.

505608 is an abundant number, since it is smaller than the sum of its proper divisors (758472).

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

505608 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 9 representation: 505608 = (850506)₉.

505608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21076 (or 21072 counting only the distinct ones).

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

The square root of 505608 is about 711.0611788025. The cubic root of 505608 is about 79.6656882248.

The spelling of 505608 in words is "five hundred five thousand, six hundred eight".