3687220217 has 2 divisors, whose sum is σ = 3687220218. Its totient is φ = 3687220216.

The previous prime is 3687220181. The next prime is 3687220261. The reversal of 3687220217 is 7120227863.

3687220217 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3644657641 + 42562576 = 60371^2 + 6524^2 .

It is a cyclic number.

It is not a de Polignac number, because 3687220217 - 2⁶ = 3687220153 is a prime.

It is not a weakly prime, because it can be changed into another prime (3687220267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1843610108 + 1843610109.

It is an arithmetic number, because the mean of its divisors is an integer number (1843610109).

Almost surely, 2^3687220217 is an apocalyptic number.

It is an amenable number.

3687220217 is a deficient number, since it is larger than the sum of its proper divisors (1).

3687220217 is an equidigital number, since it uses as much as digits as its factorization.

3687220217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 3687220217 is about 60722.4852669915. The cubic root of 3687220217 is about 1544.8975773020.

The spelling of 3687220217 in words is "three billion, six hundred eighty-seven million, two hundred twenty thousand, two hundred seventeen".