506655 has 28 divisors (see below), whose sum is σ = 918120. Its totient is φ = 268272.

The previous prime is 506647. The next prime is 506663. The reversal of 506655 is 556605.

506655 is a `hidden beast` number, since 5 + 0 + 6 + 655 = 666.

It is an interprime number because it is at equal distance from previous prime (506647) and next prime (506663).

It is not a de Polignac number, because 506655 - 2³ = 506647 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 3576 + ... + 3714.

It is an arithmetic number, because the mean of its divisors is an integer number (32790).

2⁵⁰⁶⁶⁵⁵ is an apocalyptic number.

506655 is a deficient number, since it is larger than the sum of its proper divisors (411465).

506655 is an equidigital number, since it uses as much as digits as its factorization.

506655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 506655 is about 711.7970216291. The cubic root of 506655 is about 79.7206401951.

The spelling of 506655 in words is "five hundred six thousand, six hundred fifty-five".