660443152 has 10 divisors (see below), whose sum is σ = 1279608638. Its totient is φ = 330221568.

The previous prime is 660443143. The next prime is 660443167. The reversal of 660443152 is 251344066.

It can be written as a sum of positive squares in only one way, i.e., 582932736 + 77510416 = 24144^2 + 8804^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20638833 + ... + 20638864.

Almost surely, 2^660443152 is an apocalyptic number.

It is an amenable number.

660443152 is a deficient number, since it is larger than the sum of its proper divisors (619165486).

660443152 is a wasteful number, since it uses less digits than its factorization.

660443152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41277705 (or 41277699 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 660443152 is about 25699.0885441488. The cubic root of 660443152 is about 870.8535912648.

It can be divided in two parts, 66044 and 3152, that added together give a palindrome (69196).

The spelling of 660443152 in words is "six hundred sixty million, four hundred forty-three thousand, one hundred fifty-two".