520450660 has 24 divisors (see below), whose sum is σ = 1150470720. Its totient is φ = 197223264.

The previous prime is 520450649. The next prime is 520450663. The reversal of 520450660 is 66054025.

It is not an unprimeable number, because it can be changed into a prime (520450663) 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, 684424 + ... + 685183.

It is an arithmetic number, because the mean of its divisors is an integer number (47936280).

Almost surely, 2^520450660 is an apocalyptic number.

It is an amenable number.

520450660 is an abundant number, since it is smaller than the sum of its proper divisors (630020060).

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

520450660 is a wasteful number, since it uses less digits than its factorization.

520450660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369635 (or 1369633 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 520450660 is about 22813.3877361518. The cubic root of 520450660 is about 804.3773898036.

The spelling of 520450660 in words is "five hundred twenty million, four hundred fifty thousand, six hundred sixty".