663580432 has 10 divisors (see below), whose sum is σ = 1285687118. Its totient is φ = 331790208.

The previous prime is 663580427. The next prime is 663580471. The reversal of 663580432 is 234085366.

663580432 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 only one way, i.e., 402564096 + 261016336 = 20064^2 + 16156^2 .

It is a junction number, because it is equal to n+sod(n) for n = 663580391 and 663580400.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20736873 + ... + 20736904.

Almost surely, 2^663580432 is an apocalyptic number.

It is an amenable number.

663580432 is a deficient number, since it is larger than the sum of its proper divisors (622106686).

663580432 is a wasteful number, since it uses less digits than its factorization.

663580432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41473785 (or 41473779 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 663580432 is about 25760.0549688855. The cubic root of 663580432 is about 872.2303420331.

The spelling of 663580432 in words is "six hundred sixty-three million, five hundred eighty thousand, four hundred thirty-two".