200644866 has 12 divisors (see below), whose sum is σ = 434730582. Its totient is φ = 66881616.

The previous prime is 200644861. The next prime is 200644867. The reversal of 200644866 is 668446002.

It is a happy number.

200644866 is a `hidden beast` number, since 2 + 0 + 0 + 644 + 8 + 6 + 6 = 666.

200644866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 190854225 + 9790641 = 13815^2 + 3129^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 200644866.

It is not an unprimeable number, because it can be changed into a prime (200644861) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5573451 + ... + 5573486.

Almost surely, 2^200644866 is an apocalyptic number.

200644866 is an abundant number, since it is smaller than the sum of its proper divisors (234085716).

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

200644866 is a wasteful number, since it uses less digits than its factorization.

200644866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11146945 (or 11146942 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 200644866 is about 14164.9167311354. The cubic root of 200644866 is about 585.4314065248.

The spelling of 200644866 in words is "two hundred million, six hundred forty-four thousand, eight hundred sixty-six".