503116660 has 12 divisors (see below), whose sum is σ = 1056545028. Its totient is φ = 201246656.

The previous prime is 503116619. The next prime is 503116673. The reversal of 503116660 is 66611305.

It can be written as a sum of positive squares in 2 ways, for example, as 345513744 + 157602916 = 18588^2 + 12554^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12577897 + ... + 12577936.

It is an arithmetic number, because the mean of its divisors is an integer number (88045419).

Almost surely, 2^503116660 is an apocalyptic number.

It is an amenable number.

503116660 is an abundant number, since it is smaller than the sum of its proper divisors (553428368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

503116660 is a wasteful number, since it uses less digits than its factorization.

503116660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25155842 (or 25155840 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 503116660 is about 22430.2621473758. The cubic root of 503116660 is about 795.3462410705.

Adding to 503116660 its reverse (66611305), we get a palindrome (569727965).

The spelling of 503116660 in words is "five hundred three million, one hundred sixteen thousand, six hundred sixty".