200661560 has 64 divisors (see below), whose sum is σ = 496735200. Its totient is φ = 72948480.

The previous prime is 200661553. The next prime is 200661569. The reversal of 200661560 is 65166002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200661569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51356 + ... + 55124.

Almost surely, 2^200661560 is an apocalyptic number.

200661560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 200661560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248367600).

200661560 is an abundant number, since it is smaller than the sum of its proper divisors (296073640).

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

200661560 is a wasteful number, since it uses less digits than its factorization.

200661560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3813 (or 3787 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 200661560 is about 14165.5059916686. The cubic root of 200661560 is about 585.4476423765.

The spelling of 200661560 in words is "two hundred million, six hundred sixty-one thousand, five hundred sixty".