505906660 has 24 divisors (see below), whose sum is σ = 1214176320. Its totient is φ = 173453664.

The previous prime is 505906657. The next prime is 505906669. The reversal of 505906660 is 66609505.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (505906669) 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, 1806670 + ... + 1806949.

It is an arithmetic number, because the mean of its divisors is an integer number (50590680).

Almost surely, 2^505906660 is an apocalyptic number.

It is an amenable number.

505906660 is an abundant number, since it is smaller than the sum of its proper divisors (708269660).

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

505906660 is a wasteful number, since it uses less digits than its factorization.

505906660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3613635 (or 3613633 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 505906660 is about 22492.3689281498. The cubic root of 505906660 is about 796.8137117237.

The spelling of 505906660 in words is "five hundred five million, nine hundred six thousand, six hundred sixty".