513220660 has 48 divisors (see below), whose sum is σ = 1108138752. Its totient is φ = 199584000.

The previous prime is 513220637. The next prime is 513220663. The reversal of 513220660 is 66022315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513220663) 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 15 ways as a sum of consecutive naturals, for example, 101185 + ... + 106135.

It is an arithmetic number, because the mean of its divisors is an integer number (23086224).

Almost surely, 2^513220660 is an apocalyptic number.

It is an amenable number.

513220660 is an abundant number, since it is smaller than the sum of its proper divisors (594918092).

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

513220660 is a wasteful number, since it uses less digits than its factorization.

513220660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5104 (or 5102 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 513220660 is about 22654.3739706044. The cubic root of 513220660 is about 800.6352558457.

Adding to 513220660 its reverse (66022315), we get a palindrome (579242975).

The spelling of 513220660 in words is "five hundred thirteen million, two hundred twenty thousand, six hundred sixty".