3606661 has 2 divisors, whose sum is σ = 3606662. Its totient is φ = 3606660.

The previous prime is 3606613. The next prime is 3606679. The reversal of 3606661 is 1666063.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2461761 + 1144900 = 1569^2 + 1070^2 .

It is a cyclic number.

It is not a de Polignac number, because 3606661 - 2²¹ = 1509509 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3606061) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1803330 + 1803331.

It is an arithmetic number, because the mean of its divisors is an integer number (1803331).

Almost surely, 2^3606661 is an apocalyptic number.

It is an amenable number.

3606661 is a deficient number, since it is larger than the sum of its proper divisors (1).

3606661 is an equidigital number, since it uses as much as digits as its factorization.

3606661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 3606661 is about 1899.1211125149. The cubic root of 3606661 is about 153.3563539265.

It can be divided in two parts, 360 and 6661, that added together give a triangular number (7021 = T₁₁₈).

The spelling of 3606661 in words is "three million, six hundred six thousand, six hundred sixty-one".