3618217 has 2 divisors, whose sum is σ = 3618218. Its totient is φ = 3618216.

The previous prime is 3618211. The next prime is 3618233. The reversal of 3618217 is 7128163.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2399401 + 1218816 = 1549^2 + 1104^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3618217 is a prime.

It is not a weakly prime, because it can be changed into another prime (3618211) 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, 1809108 + 1809109.

It is an arithmetic number, because the mean of its divisors is an integer number (1809109).

Almost surely, 2^3618217 is an apocalyptic number.

It is an amenable number.

3618217 is a deficient number, since it is larger than the sum of its proper divisors (1).

3618217 is an equidigital number, since it uses as much as digits as its factorization.

3618217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 28.

The square root of 3618217 is about 1902.1611393360. The cubic root of 3618217 is about 153.5199675525.

The spelling of 3618217 in words is "three million, six hundred eighteen thousand, two hundred seventeen".