503387613 has 12 divisors (see below), whose sum is σ = 735876960. Its totient is φ = 331547976.

The previous prime is 503387609. The next prime is 503387623. The reversal of 503387613 is 316783305.

503387613 is a `hidden beast` number, since 5 + 0 + 3 + 38 + 7 + 613 = 666.

It is not a de Polignac number, because 503387613 - 2² = 503387609 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503387623) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 336193 + ... + 337686.

It is an arithmetic number, because the mean of its divisors is an integer number (61323080).

Almost surely, 2^503387613 is an apocalyptic number.

It is an amenable number.

503387613 is a deficient number, since it is larger than the sum of its proper divisors (232489347).

503387613 is a wasteful number, since it uses less digits than its factorization.

503387613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673968 (or 673965 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 503387613 is about 22436.3012326007. The cubic root of 503387613 is about 795.4889931018.

The spelling of 503387613 in words is "five hundred three million, three hundred eighty-seven thousand, six hundred thirteen".