660563200 has 162 divisors, whose sum is σ = 1799252462. Its totient is φ = 239923200.

The previous prime is 660563191. The next prime is 660563207. The reversal of 660563200 is 2365066.

It can be written as a sum of positive squares in 3 ways, for example, as 278784 + 660284416 = 528^2 + 25696^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660563207) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 773974 + ... + 774826.

Almost surely, 2^660563200 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 660563200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (899626231).

660563200 is an abundant number, since it is smaller than the sum of its proper divisors (1138689262).

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

660563200 is a wasteful number, since it uses less digits than its factorization.

660563200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901 (or 871 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 660563200 is about 25701.4240850580. The cubic root of 660563200 is about 870.9063527568.

The spelling of 660563200 in words is "six hundred sixty million, five hundred sixty-three thousand, two hundred".