506647 has 2 divisors, whose sum is σ = 506648. Its totient is φ = 506646.

The previous prime is 506629. The next prime is 506663. The reversal of 506647 is 746605.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 506647 - 2¹¹ = 504599 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (506687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253323 + 253324.

It is an arithmetic number, because the mean of its divisors is an integer number (253324).

2⁵⁰⁶⁶⁴⁷ is an apocalyptic number.

506647 is a deficient number, since it is larger than the sum of its proper divisors (1).

506647 is an equidigital number, since it uses as much as digits as its factorization.

506647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 506647 is about 711.7914020273. The cubic root of 506647 is about 79.7202206009.

The spelling of 506647 in words is "five hundred six thousand, six hundred forty-seven".