666633532 has 12 divisors (see below), whose sum is σ = 1178159976. Its totient is φ = 330016400.

The previous prime is 666633511. The next prime is 666633533. The reversal of 666633532 is 235336666.

666633532 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666633533) 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, 824638 + ... + 825445.

It is an arithmetic number, because the mean of its divisors is an integer number (98179998).

Almost surely, 2^666633532 is an apocalyptic number.

It is an amenable number.

666633532 is a deficient number, since it is larger than the sum of its proper divisors (511526444).

666633532 is a wasteful number, since it uses less digits than its factorization.

666633532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650188 (or 1650186 counting only the distinct ones).

The product of its digits is 349920, while the sum is 40.

The square root of 666633532 is about 25819.2473166822. The cubic root of 666633532 is about 873.5659915978.

The spelling of 666633532 in words is "six hundred sixty-six million, six hundred thirty-three thousand, five hundred thirty-two".