3218609 has 2 divisors, whose sum is σ = 3218610. Its totient is φ = 3218608.

The previous prime is 3218587. The next prime is 3218629. The reversal of 3218609 is 9068123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2310400 + 908209 = 1520^2 + 953^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3218609 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3218629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1609304 + 1609305.

It is an arithmetic number, because the mean of its divisors is an integer number (1609305).

Almost surely, 2^3218609 is an apocalyptic number.

It is an amenable number.

3218609 is a deficient number, since it is larger than the sum of its proper divisors (1).

3218609 is an equidigital number, since it uses as much as digits as its factorization.

3218609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 3218609 is about 1794.0482156286. The cubic root of 3218609 is about 147.6463586041.

The spelling of 3218609 in words is "three million, two hundred eighteen thousand, six hundred nine".