321797609 has 16 divisors (see below), whose sum is σ = 376047360. Its totient is φ = 269655360.

The previous prime is 321797603. The next prime is 321797617. The reversal of 321797609 is 906797123.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 321797609 - 2⁸ = 321797353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 321797609.

It is not an unprimeable number, because it can be changed into a prime (321797603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113987 + ... + 116775.

It is an arithmetic number, because the mean of its divisors is an integer number (23502960).

Almost surely, 2^321797609 is an apocalyptic number.

It is an amenable number.

321797609 is a deficient number, since it is larger than the sum of its proper divisors (54249751).

321797609 is a wasteful number, since it uses less digits than its factorization.

321797609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3160.

The product of its (nonzero) digits is 142884, while the sum is 44.

The square root of 321797609 is about 17938.7181537589. The cubic root of 321797609 is about 685.2687662543.

The spelling of 321797609 in words is "three hundred twenty-one million, seven hundred ninety-seven thousand, six hundred nine".