3721717 has 2 divisors, whose sum is σ = 3721718. Its totient is φ = 3721716.

The previous prime is 3721673. The next prime is 3721721. The reversal of 3721717 is 7171273.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3721041 + 676 = 1929^2 + 26^2 .

It is a cyclic number.

It is not a de Polignac number, because 3721717 - 2¹¹ = 3719669 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3721727) 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, 1860858 + 1860859.

It is an arithmetic number, because the mean of its divisors is an integer number (1860859).

Almost surely, 2^3721717 is an apocalyptic number.

It is an amenable number.

3721717 is a deficient number, since it is larger than the sum of its proper divisors (1).

3721717 is an equidigital number, since it uses as much as digits as its factorization.

3721717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2058, while the sum is 28.

The square root of 3721717 is about 1929.1752123641. The cubic root of 3721717 is about 154.9700531808.

The spelling of 3721717 in words is "three million, seven hundred twenty-one thousand, seven hundred seventeen".