503664066 has 24 divisors (see below), whose sum is σ = 1155465324. Its totient is φ = 158012160.

The previous prime is 503664053. The next prime is 503664067. The reversal of 503664066 is 660466305.

503664066 is a `hidden beast` number, since 5 + 0 + 3 + 6 + 640 + 6 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 478953225 + 24710841 = 21885^2 + 4971^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 503664066.

It is not an unprimeable number, because it can be changed into a prime (503664067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 822675 + ... + 823286.

Almost surely, 2^503664066 is an apocalyptic number.

503664066 is an abundant number, since it is smaller than the sum of its proper divisors (651801258).

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

503664066 is a wasteful number, since it uses less digits than its factorization.

503664066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1645986 (or 1645983 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 503664066 is about 22442.4612286621. The cubic root of 503664066 is about 795.6345900316.

The spelling of 503664066 in words is "five hundred three million, six hundred sixty-four thousand, sixty-six".