660132800 has 168 divisors, whose sum is σ = 1726295760. Its totient is φ = 248012800.

The previous prime is 660132773. The next prime is 660132833. The reversal of 660132800 is 8231066.

660132800 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 660132800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1902227 + ... + 1902573.

It is an arithmetic number, because the mean of its divisors is an integer number (10275570).

Almost surely, 2^660132800 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 660132800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (863147880).

660132800 is an abundant number, since it is smaller than the sum of its proper divisors (1066162960).

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

660132800 is a wasteful number, since it uses less digits than its factorization.

660132800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439 (or 424 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 660132800 is about 25693.0496438239. The cubic root of 660132800 is about 870.7171609004.

Adding to 660132800 its reverse (8231066), we get a palindrome (668363866).

The spelling of 660132800 in words is "six hundred sixty million, one hundred thirty-two thousand, eight hundred".