665633022 has 8 divisors (see below), whose sum is σ = 1331266056. Its totient is φ = 221877672.

The previous prime is 665633021. The next prime is 665633039. The reversal of 665633022 is 220336566.

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

665633022 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665633021) 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, 55469413 + ... + 55469424.

It is an arithmetic number, because the mean of its divisors is an integer number (166408257).

Almost surely, 2^665633022 is an apocalyptic number.

665633022 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.

665633022 is a wasteful number, since it uses less digits than its factorization.

665633022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110938842.

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

The square root of 665633022 is about 25799.8647670874. The cubic root of 665633022 is about 873.1287453030.

Adding to 665633022 its reverse (220336566), we get a palindrome (885969588).

The spelling of 665633022 in words is "six hundred sixty-five million, six hundred thirty-three thousand, twenty-two".