3688241 has 2 divisors, whose sum is σ = 3688242. Its totient is φ = 3688240.

The previous prime is 3688219. The next prime is 3688247. The reversal of 3688241 is 1428863.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3168400 + 519841 = 1780^2 + 721^2 .

It is an emirp because it is prime and its reverse (1428863) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3688241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3688198 and 3688207.

It is not a weakly prime, because it can be changed into another prime (3688247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1844120 + 1844121.

It is an arithmetic number, because the mean of its divisors is an integer number (1844121).

Almost surely, 2^3688241 is an apocalyptic number.

It is an amenable number.

3688241 is a deficient number, since it is larger than the sum of its proper divisors (1).

3688241 is an equidigital number, since it uses as much as digits as its factorization.

3688241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 32.

The square root of 3688241 is about 1920.4793672414. The cubic root of 3688241 is about 154.5040129106.

The spelling of 3688241 in words is "three million, six hundred eighty-eight thousand, two hundred forty-one".