328226609 has 4 divisors (see below), whose sum is σ = 328263204. Its totient is φ = 328190016.

The previous prime is 328226581. The next prime is 328226621. The reversal of 328226609 is 906622823.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 906622823 = 53 ⋅17106091.

It can be written as a sum of positive squares in 2 ways, for example, as 311416609 + 16810000 = 17647^2 + 4100^2 .

It is a cyclic number.

It is not a de Polignac number, because 328226609 - 2²⁸ = 59791153 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (328226699) 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 in 3 ways as a sum of consecutive naturals, for example, 5309 + ... + 26165.

It is an arithmetic number, because the mean of its divisors is an integer number (82065801).

Almost surely, 2^328226609 is an apocalyptic number.

It is an amenable number.

328226609 is a deficient number, since it is larger than the sum of its proper divisors (36595).

328226609 is a wasteful number, since it uses less digits than its factorization.

328226609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36594.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 328226609 is about 18117.0253904994. The cubic root of 328226609 is about 689.8022320560.

The spelling of 328226609 in words is "three hundred twenty-eight million, two hundred twenty-six thousand, six hundred nine".