665542322 has 8 divisors (see below), whose sum is σ = 998836272. Its totient is φ = 332596900.

The previous prime is 665542321. The next prime is 665542331. The reversal of 665542322 is 223245566.

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

It is not an unprimeable number, because it can be changed into a prime (665542321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82304 + ... + 90027.

It is an arithmetic number, because the mean of its divisors is an integer number (124854534).

Almost surely, 2^665542322 is an apocalyptic number.

665542322 is a deficient number, since it is larger than the sum of its proper divisors (333293950).

665542322 is a wasteful number, since it uses less digits than its factorization.

665542322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174264.

The product of its digits is 86400, while the sum is 35.

The square root of 665542322 is about 25798.1069460532. The cubic root of 665542322 is about 873.0890856247.

Adding to 665542322 its reverse (223245566), we get a palindrome (888787888).

The spelling of 665542322 in words is "six hundred sixty-five million, five hundred forty-two thousand, three hundred twenty-two".