666632480 has 96 divisors (see below), whose sum is σ = 1674691200. Its totient is φ = 250048512.

The previous prime is 666632479. The next prime is 666632503. The reversal of 666632480 is 84236666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 312056 + ... + 314184.

It is an arithmetic number, because the mean of its divisors is an integer number (17444700).

Almost surely, 2^666632480 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 666632480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (837345600).

666632480 is an abundant number, since it is smaller than the sum of its proper divisors (1008058720).

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

666632480 is a wasteful number, since it uses less digits than its factorization.

666632480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2266 (or 2258 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 41.

The square root of 666632480 is about 25819.2269442755. The cubic root of 666632480 is about 873.5655320790.

The spelling of 666632480 in words is "six hundred sixty-six million, six hundred thirty-two thousand, four hundred eighty".