663588020 has 12 divisors (see below), whose sum is σ = 1393534884. Its totient is φ = 265435200.

The previous prime is 663587989. The next prime is 663588043. The reversal of 663588020 is 20885366.

663588020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 400240036 + 263347984 = 20006^2 + 16228^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16589681 + ... + 16589720.

It is an arithmetic number, because the mean of its divisors is an integer number (116127907).

Almost surely, 2^663588020 is an apocalyptic number.

It is an amenable number.

663588020 is an abundant number, since it is smaller than the sum of its proper divisors (729946864).

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

663588020 is a wasteful number, since it uses less digits than its factorization.

663588020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33179410 (or 33179408 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 663588020 is about 25760.2022507588. The cubic root of 663588020 is about 872.2336666532.

The spelling of 663588020 in words is "six hundred sixty-three million, five hundred eighty-eight thousand, twenty".