660288528 has 60 divisors (see below), whose sum is σ = 1857643008. Its totient is φ = 218934720.

The previous prime is 660288511. The next prime is 660288533. The reversal of 660288528 is 825882066.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15501 + ... + 39507.

Almost surely, 2^660288528 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 660288528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (928821504).

660288528 is an abundant number, since it is smaller than the sum of its proper divisors (1197354480).

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

660288528 is a wasteful number, since it uses less digits than its factorization.

660288528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24212 (or 24203 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The square root of 660288528 is about 25696.0800123287. The cubic root of 660288528 is about 870.7856240849.

The spelling of 660288528 in words is "six hundred sixty million, two hundred eighty-eight thousand, five hundred twenty-eight".