505135660 has 24 divisors (see below), whose sum is σ = 1106906976. Its totient is φ = 193269120.

The previous prime is 505135613. The next prime is 505135661. The reversal of 505135660 is 66531505.

It is not an unprimeable number, because it can be changed into a prime (505135661) 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, 548601 + ... + 549520.

It is an arithmetic number, because the mean of its divisors is an integer number (46121124).

Almost surely, 2^505135660 is an apocalyptic number.

It is an amenable number.

505135660 is an abundant number, since it is smaller than the sum of its proper divisors (601771316).

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

505135660 is a wasteful number, since it uses less digits than its factorization.

505135660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1098153 (or 1098151 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 505135660 is about 22475.2232469446. The cubic root of 505135660 is about 796.4087254745.

The spelling of 505135660 in words is "five hundred five million, one hundred thirty-five thousand, six hundred sixty".