3330003661 has 2 divisors, whose sum is σ = 3330003662. Its totient is φ = 3330003660.

The previous prime is 3330003653. The next prime is 3330003701. The reversal of 3330003661 is 1663000333.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2593966761 + 736036900 = 50931^2 + 27130^2 .

It is a cyclic number.

It is not a de Polignac number, because 3330003661 - 2³ = 3330003653 is a prime.

It is a super-2 number, since 2×3330003661² = 22177848764546805842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3330003161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1665001830 + 1665001831.

It is an arithmetic number, because the mean of its divisors is an integer number (1665001831).

Almost surely, 2^3330003661 is an apocalyptic number.

It is an amenable number.

3330003661 is a deficient number, since it is larger than the sum of its proper divisors (1).

3330003661 is an equidigital number, since it uses as much as digits as its factorization.

3330003661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 25.

The square root of 3330003661 is about 57706.1839060598. The cubic root of 3330003661 is about 1493.3040295002.

Adding to 3330003661 its reverse (1663000333), we get a palindrome (4993003994).

The spelling of 3330003661 in words is "three billion, three hundred thirty million, three thousand, six hundred sixty-one".