3659261 has 2 divisors, whose sum is σ = 3659262. Its totient is φ = 3659260.

The previous prime is 3659237. The next prime is 3659273. The reversal of 3659261 is 1629563.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3276100 + 383161 = 1810^2 + 619^2 .

It is a cyclic number.

It is not a de Polignac number, because 3659261 - 2¹⁸ = 3397117 is a prime.

It is a super-2 number, since 2×3659261² = 26780382132242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3659861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1829630 + 1829631.

It is an arithmetic number, because the mean of its divisors is an integer number (1829631).

Almost surely, 2^3659261 is an apocalyptic number.

It is an amenable number.

3659261 is a deficient number, since it is larger than the sum of its proper divisors (1).

3659261 is an equidigital number, since it uses as much as digits as its factorization.

3659261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9720, while the sum is 32.

The square root of 3659261 is about 1912.9194964765. The cubic root of 3659261 is about 154.0982815606.

The spelling of 3659261 in words is "three million, six hundred fifty-nine thousand, two hundred sixty-one".