663663432 has 16 divisors (see below), whose sum is σ = 1659158640. Its totient is φ = 221221136.

The previous prime is 663663431. The next prime is 663663439. The reversal of 663663432 is 234366366.

663663432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (663663431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13826298 + ... + 13826345.

It is an arithmetic number, because the mean of its divisors is an integer number (103697415).

Almost surely, 2^663663432 is an apocalyptic number.

It is an amenable number.

663663432 is an abundant number, since it is smaller than the sum of its proper divisors (995495208).

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

663663432 is a wasteful number, since it uses less digits than its factorization.

663663432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27652652 (or 27652648 counting only the distinct ones).

The product of its digits is 279936, while the sum is 39.

The square root of 663663432 is about 25761.6659399193. The cubic root of 663663432 is about 872.2667064268.

The spelling of 663663432 in words is "six hundred sixty-three million, six hundred sixty-three thousand, four hundred thirty-two".