505166664 has 32 divisors (see below), whose sum is σ = 1317827520. Its totient is φ = 161067456.

The previous prime is 505166657. The next prime is 505166719. The reversal of 505166664 is 466661505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 457027 + ... + 458130.

It is an arithmetic number, because the mean of its divisors is an integer number (41182110).

Almost surely, 2^505166664 is an apocalyptic number.

It is an amenable number.

505166664 is an abundant number, since it is smaller than the sum of its proper divisors (812660856).

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

505166664 is a wasteful number, since it uses less digits than its factorization.

505166664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915189 (or 915185 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 39.

The square root of 505166664 is about 22475.9129736703. The cubic root of 505166664 is about 796.4250190189.

The spelling of 505166664 in words is "five hundred five million, one hundred sixty-six thousand, six hundred sixty-four".