506705 has 4 divisors (see below), whose sum is σ = 608052. Its totient is φ = 405360.

The previous prime is 506699. The next prime is 506729. The reversal of 506705 is 507605.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 341056 + 165649 = 584^2 + 407^2 .

It is not a de Polignac number, because 506705 - 2⁴ = 506689 is a prime.

It is a Duffinian number.

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, 50666 + ... + 50675.

It is an arithmetic number, because the mean of its divisors is an integer number (152013).

2⁵⁰⁶⁷⁰⁵ is an apocalyptic number.

It is an amenable number.

506705 is a deficient number, since it is larger than the sum of its proper divisors (101347).

506705 is a wasteful number, since it uses less digits than its factorization.

506705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101346.

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 506705 is about 711.8321431349. The cubic root of 506705 is about 79.7232625587.

Subtracting 506705 from its reverse (507605), we obtain a square (900 = 30²).

The spelling of 506705 in words is "five hundred six thousand, seven hundred five".