2200701661 has 2 divisors, whose sum is σ = 2200701662. Its totient is φ = 2200701660.

The previous prime is 2200701653. The next prime is 2200701689. The reversal of 2200701661 is 1661070022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2189772025 + 10929636 = 46795^2 + 3306^2 .

It is a cyclic number.

It is not a de Polignac number, because 2200701661 - 2³ = 2200701653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2200701361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1100350830 + 1100350831.

It is an arithmetic number, because the mean of its divisors is an integer number (1100350831).

Almost surely, 2^2200701661 is an apocalyptic number.

It is an amenable number.

2200701661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2200701661 is an equidigital number, since it uses as much as digits as its factorization.

2200701661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 2200701661 is about 46911.6367333309. The cubic root of 2200701661 is about 1300.7297009869.

Adding to 2200701661 its reverse (1661070022), we get a palindrome (3861771683).

The spelling of 2200701661 in words is "two billion, two hundred million, seven hundred one thousand, six hundred sixty-one".