3681719 has 2 divisors, whose sum is σ = 3681720. Its totient is φ = 3681718.

The previous prime is 3681709. The next prime is 3681731. The reversal of 3681719 is 9171863.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3681719 - 2¹⁶ = 3616183 is a prime.

It is a super-2 number, since 2×3681719² = 27110109589922, which contains 22 as substring.

It is a Sophie Germain 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 (3681709) 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, 1840859 + 1840860.

It is an arithmetic number, because the mean of its divisors is an integer number (1840860).

Almost surely, 2^3681719 is an apocalyptic number.

3681719 is a deficient number, since it is larger than the sum of its proper divisors (1).

3681719 is an equidigital number, since it uses as much as digits as its factorization.

3681719 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 35.

The square root of 3681719 is about 1918.7806023618. The cubic root of 3681719 is about 154.4128881964.

The spelling of 3681719 in words is "three million, six hundred eighty-one thousand, seven hundred nineteen".