501313660 has 24 divisors (see below), whose sum is σ = 1053213840. Its totient is φ = 200438784.

The previous prime is 501313643. The next prime is 501313667. The reversal of 501313660 is 66313105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501313667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63196 + ... + 70684.

It is an arithmetic number, because the mean of its divisors is an integer number (43883910).

Almost surely, 2^501313660 is an apocalyptic number.

It is an amenable number.

501313660 is an abundant number, since it is smaller than the sum of its proper divisors (551900180).

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

501313660 is a wasteful number, since it uses less digits than its factorization.

501313660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10845 (or 10843 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 501313660 is about 22390.0348369537. The cubic root of 501313660 is about 794.3950198748.

Adding to 501313660 its reverse (66313105), we get a palindrome (567626765).

The spelling of 501313660 in words is "five hundred one million, three hundred thirteen thousand, six hundred sixty".