3646261 has 2 divisors, whose sum is σ = 3646262. Its totient is φ = 3646260.

The previous prime is 3646231. The next prime is 3646289. The reversal of 3646261 is 1626463.

It is an a-pointer prime, because the next prime (3646289) can be obtained adding 3646261 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1943236 + 1703025 = 1394^2 + 1305^2 .

It is a cyclic number.

It is not a de Polignac number, because 3646261 - 2⁵ = 3646229 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 (3646231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1823130 + 1823131.

It is an arithmetic number, because the mean of its divisors is an integer number (1823131).

Almost surely, 2^3646261 is an apocalyptic number.

It is an amenable number.

3646261 is a deficient number, since it is larger than the sum of its proper divisors (1).

3646261 is an equidigital number, since it uses as much as digits as its factorization.

3646261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 28.

The square root of 3646261 is about 1909.5185257022. The cubic root of 3646261 is about 153.9155803125.

The spelling of 3646261 in words is "three million, six hundred forty-six thousand, two hundred sixty-one".