503681613 has 8 divisors (see below), whose sum is σ = 671784000. Its totient is φ = 335683488.

The previous prime is 503681609. The next prime is 503681653. The reversal of 503681613 is 316186305.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 503681613 - 2² = 503681609 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503681653) 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 7 ways as a sum of consecutive naturals, for example, 13993 + ... + 34686.

It is an arithmetic number, because the mean of its divisors is an integer number (83973000).

Almost surely, 2^503681613 is an apocalyptic number.

It is an amenable number.

503681613 is a deficient number, since it is larger than the sum of its proper divisors (168102387).

503681613 is a wasteful number, since it uses less digits than its factorization.

503681613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52131.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 503681613 is about 22442.8521583154. The cubic root of 503681613 is about 795.6438295486.

The spelling of 503681613 in words is "five hundred three million, six hundred eighty-one thousand, six hundred thirteen".