506785 has 8 divisors (see below), whose sum is σ = 616320. Its totient is φ = 399984.

The previous prime is 506783. The next prime is 506791. The reversal of 506785 is 587605.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 506785 - 2¹ = 506783 is a prime.

It is not an unprimeable number, because it can be changed into a prime (506783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247 + ... + 1036.

It is an arithmetic number, because the mean of its divisors is an integer number (77040).

2⁵⁰⁶⁷⁸⁵ is an apocalyptic number.

It is an amenable number.

506785 is a deficient number, since it is larger than the sum of its proper divisors (109535).

506785 is a wasteful number, since it uses less digits than its factorization.

506785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1367.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 506785 is about 711.8883339401. Note that the first 3 decimals coincide. The cubic root of 506785 is about 79.7274579817.

The spelling of 506785 in words is "five hundred six thousand, seven hundred eighty-five".