506687 has 2 divisors, whose sum is σ = 506688. Its totient is φ = 506686.

The previous prime is 506683. The next prime is 506689. The reversal of 506687 is 786605.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 506687 - 2² = 506683 is a prime.

Together with 506689, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 506687.

It is not a weakly prime, because it can be changed into another prime (506683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253343 + 253344.

It is an arithmetic number, because the mean of its divisors is an integer number (253344).

2⁵⁰⁶⁶⁸⁷ is an apocalyptic number.

506687 is a deficient number, since it is larger than the sum of its proper divisors (1).

506687 is an equidigital number, since it uses as much as digits as its factorization.

506687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 506687 is about 711.8194995924. The cubic root of 506687 is about 79.7223185277.

The spelling of 506687 in words is "five hundred six thousand, six hundred eighty-seven".