532643688 has 80 divisors (see below), whose sum is σ = 1497178980. Its totient is φ = 176919552.

The previous prime is 532643687. The next prime is 532643707. The reversal of 532643688 is 886346235.

It is a happy number.

532643688 is a `hidden beast` number, since 532 + 6 + 4 + 36 + 88 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 507060324 + 25583364 = 22518^2 + 5058^2 .

It is not an unprimeable number, because it can be changed into a prime (532643687) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 204120 + ... + 206712.

Almost surely, 2^532643688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 532643688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (748589490).

532643688 is an abundant number, since it is smaller than the sum of its proper divisors (964535292).

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

532643688 is a wasteful number, since it uses less digits than its factorization.

532643688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2928 (or 2915 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The square root of 532643688 is about 23079.0746781581. The cubic root of 532643688 is about 810.6105684516.

The spelling of 532643688 in words is "five hundred thirty-two million, six hundred forty-three thousand, six hundred eighty-eight".