506685 has 16 divisors (see below), whose sum is σ = 858816. Its totient is φ = 254208.

The previous prime is 506683. The next prime is 506687. The reversal of 506685 is 586605.

It is an interprime number because it is at equal distance from previous prime (506683) and next prime (506687).

It is not a de Polignac number, because 506685 - 2¹ = 506683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 739 + ... + 1248.

It is an arithmetic number, because the mean of its divisors is an integer number (53676).

2⁵⁰⁶⁶⁸⁵ is an apocalyptic number.

It is an amenable number.

506685 is a deficient number, since it is larger than the sum of its proper divisors (352131).

506685 is a wasteful number, since it uses less digits than its factorization.

506685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2012.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 506685 is about 711.8180947405. The cubic root of 506685 is about 79.7222136339.

It can be divided in two parts, 5066 and 85, that added together give a triangular number (5151 = T₁₀₁).

The spelling of 506685 in words is "five hundred six thousand, six hundred eighty-five".