503687 has 4 divisors (see below), whose sum is σ = 508776. Its totient is φ = 498600.

The previous prime is 503663. The next prime is 503707. The reversal of 503687 is 786305.

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

It is a cyclic number.

It is not a de Polignac number, because 503687 - 2⁶ = 503623 is a prime.

It is a Duffinian number.

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 503687.

It is not an unprimeable number, because it can be changed into a prime (503647) 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 in 3 ways as a sum of consecutive naturals, for example, 2393 + ... + 2594.

It is an arithmetic number, because the mean of its divisors is an integer number (127194).

2⁵⁰³⁶⁸⁷ is an apocalyptic number.

503687 is a deficient number, since it is larger than the sum of its proper divisors (5089).

503687 is a wasteful number, since it uses less digits than its factorization.

503687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5088.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 503687 is about 709.7090953341. The cubic root of 503687 is about 79.5646666075.

The spelling of 503687 in words is "five hundred three thousand, six hundred eighty-seven".