2200008644 has 6 divisors (see below), whose sum is σ = 3850015134. Its totient is φ = 1100004320.

The previous prime is 2200008631. The next prime is 2200008647. The reversal of 2200008644 is 4468000022.

It can be written as a sum of positive squares in only one way, i.e., 2157602500 + 42406144 = 46450^2 + 6512^2 .

It is not an unprimeable number, because it can be changed into a prime (2200008647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275001077 + ... + 275001084.

It is an arithmetic number, because the mean of its divisors is an integer number (641669189).

Almost surely, 2^2200008644 is an apocalyptic number.

It is an amenable number.

2200008644 is a deficient number, since it is larger than the sum of its proper divisors (1650006490).

2200008644 is a wasteful number, since it uses less digits than its factorization.

2200008644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550002165 (or 550002163 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 2200008644 is about 46904.2497434934. The cubic root of 2200008644 is about 1300.5931502298.

Adding to 2200008644 its reverse (4468000022), we get a palindrome (6668008666).

The spelling of 2200008644 in words is "two billion, two hundred million, eight thousand, six hundred forty-four".