3716221 has 2 divisors, whose sum is σ = 3716222. Its totient is φ = 3716220.

The previous prime is 3716197. The next prime is 3716227. The reversal of 3716221 is 1226173.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3648100 + 68121 = 1910^2 + 261^2 .

It is a cyclic number.

It is not a de Polignac number, because 3716221 - 2⁹ = 3715709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3716192 and 3716201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3716227) 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, 1858110 + 1858111.

It is an arithmetic number, because the mean of its divisors is an integer number (1858111).

Almost surely, 2^3716221 is an apocalyptic number.

It is an amenable number.

3716221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3716221 is an equidigital number, since it uses as much as digits as its factorization.

3716221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504, while the sum is 22.

The square root of 3716221 is about 1927.7502431591. The cubic root of 3716221 is about 154.8937322238.

The spelling of 3716221 in words is "three million, seven hundred sixteen thousand, two hundred twenty-one".