200730666 has 16 divisors (see below), whose sum is σ = 401601600. Its totient is φ = 66886848.

The previous prime is 200730653. The next prime is 200730667. The reversal of 200730666 is 666037002.

200730666 is a nontrivial binomial coefficient, being equal to C(20037, 2).

It is not an unprimeable number, because it can be changed into a prime (200730667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26715 + ... + 33393.

It is an arithmetic number, because the mean of its divisors is an integer number (25100100).

Almost surely, 2^200730666 is an apocalyptic number.

200730666 is the 20036-th triangular number.

200730666 is an abundant number, since it is smaller than the sum of its proper divisors (200870934).

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

200730666 is a wasteful number, since it uses less digits than its factorization.

200730666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11693.

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 200730666 is about 14167.9450168329. The cubic root of 200730666 is about 585.5148422614.

Adding to 200730666 its reverse (666037002), we get a palindrome (866767668).

The spelling of 200730666 in words is "two hundred million, seven hundred thirty thousand, six hundred sixty-six".