506566 has 16 divisors (see below), whose sum is σ = 824256. Its totient is φ = 232576.

The previous prime is 506563. The next prime is 506573. The reversal of 506566 is 665605.

It is a super-2 number, since 2×506566² = 513218224712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506563) 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, 1440 + ... + 1756.

It is an arithmetic number, because the mean of its divisors is an integer number (51516).

2⁵⁰⁶⁵⁶⁶ is an apocalyptic number.

506566 is a deficient number, since it is larger than the sum of its proper divisors (317690).

506566 is a wasteful number, since it uses less digits than its factorization.

506566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383.

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

The square root of 506566 is about 711.7345010606. The cubic root of 506566 is about 79.7159719610.

The spelling of 506566 in words is "five hundred six thousand, five hundred sixty-six".