506656 has 24 divisors (see below), whose sum is σ = 1016064. Its totient is φ = 248640.

The previous prime is 506647. The next prime is 506663. The reversal of 506656 is 656605.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2161 + ... + 2383.

It is an arithmetic number, because the mean of its divisors is an integer number (42336).

2⁵⁰⁶⁶⁵⁶ is an apocalyptic number.

It is an amenable number.

506656 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

506656 is a wasteful number, since it uses less digits than its factorization.

506656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304 (or 296 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 506656 is about 711.7977240762. The cubic root of 506656 is about 79.7206926440.

The spelling of 506656 in words is "five hundred six thousand, six hundred fifty-six".