200009866 has 12 divisors (see below), whose sum is σ = 348996978. Its totient is φ = 85718472.

The previous prime is 200009851. The next prime is 200009881. The reversal of 200009866 is 668900002.

It is an interprime number because it is at equal distance from previous prime (200009851) and next prime (200009881).

It can be written as a sum of positive squares in only one way, i.e., 198951025 + 1058841 = 14105^2 + 1029^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1020361 + ... + 1020556.

Almost surely, 2^200009866 is an apocalyptic number.

200009866 is a deficient number, since it is larger than the sum of its proper divisors (148987112).

200009866 is a wasteful number, since it uses less digits than its factorization.

200009866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040933 (or 2040926 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 200009866 is about 14142.4844352044. The cubic root of 200009866 is about 584.8131636041.

Adding to 200009866 its reverse (668900002), we get a palindrome (868909868).

The spelling of 200009866 in words is "two hundred million, nine thousand, eight hundred sixty-six".