3723221617 has 2 divisors, whose sum is σ = 3723221618. Its totient is φ = 3723221616.

The previous prime is 3723221591. The next prime is 3723221641. The reversal of 3723221617 is 7161223273.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3722952256 + 269361 = 61016^2 + 519^2 .

It is an emirp because it is prime and its reverse (7161223273) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3723221617 is a prime.

It is not a weakly prime, because it can be changed into another prime (3723221417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1861610808 + 1861610809.

It is an arithmetic number, because the mean of its divisors is an integer number (1861610809).

Almost surely, 2^3723221617 is an apocalyptic number.

It is an amenable number.

3723221617 is a deficient number, since it is larger than the sum of its proper divisors (1).

3723221617 is an equidigital number, since it uses as much as digits as its factorization.

3723221617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168, while the sum is 34.

The square root of 3723221617 is about 61018.2072581619. The cubic root of 3723221617 is about 1549.9093414891.

The spelling of 3723221617 in words is "three billion, seven hundred twenty-three million, two hundred twenty-one thousand, six hundred seventeen".