660906288 has 240 divisors, whose sum is σ = 2284139520. Its totient is φ = 174214656.

The previous prime is 660906283. The next prime is 660906289. The reversal of 660906288 is 882609066.

It is not an unprimeable number, because it can be changed into a prime (660906283) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 671845 + ... + 672827.

It is an arithmetic number, because the mean of its divisors is an integer number (9517248).

Almost surely, 2^660906288 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 660906288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1142069760).

660906288 is an abundant number, since it is smaller than the sum of its proper divisors (1623233232).

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

660906288 is a wasteful number, since it uses less digits than its factorization.

660906288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056 (or 1047 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 660906288 is about 25708.0977125885. The cubic root of 660906288 is about 871.0571058329.

The spelling of 660906288 in words is "six hundred sixty million, nine hundred six thousand, two hundred eighty-eight".