663543552 has 72 divisors (see below), whose sum is σ = 2018294656. Its totient is φ = 189582336.

The previous prime is 663543547. The next prime is 663543553. The reversal of 663543552 is 255345366.

It is a self number, because there is not a number n which added to its sum of digits gives 663543552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663543553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56338 + ... + 67089.

Almost surely, 2^663543552 is an apocalyptic number.

It is an amenable number.

663543552 is an abundant number, since it is smaller than the sum of its proper divisors (1354751104).

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

663543552 is a wasteful number, since it uses less digits than its factorization.

663543552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123453 (or 123439 counting only the distinct ones).

The product of its digits is 324000, while the sum is 39.

The square root of 663543552 is about 25759.3391219573. The cubic root of 663543552 is about 872.2141830018.

The spelling of 663543552 in words is "six hundred sixty-three million, five hundred forty-three thousand, five hundred fifty-two".