665603322 has 8 divisors (see below), whose sum is σ = 1331206656. Its totient is φ = 221867772.

The previous prime is 665603299. The next prime is 665603327. The reversal of 665603322 is 223306566.

It is a sphenic number, since it is the product of 3 distinct primes.

665603322 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (665603327) 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 3 ways as a sum of consecutive naturals, for example, 55466938 + ... + 55466949.

It is an arithmetic number, because the mean of its divisors is an integer number (166400832).

Almost surely, 2^665603322 is an apocalyptic number.

665603322 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

665603322 is a wasteful number, since it uses less digits than its factorization.

665603322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110933892.

The product of its (nonzero) digits is 38880, while the sum is 33.

The square root of 665603322 is about 25799.2891762544. The cubic root of 665603322 is about 873.1157590134.

Adding to 665603322 its reverse (223306566), we get a palindrome (888909888).

The spelling of 665603322 in words is "six hundred sixty-five million, six hundred three thousand, three hundred twenty-two".