665344002 has 16 divisors (see below), whose sum is σ = 1331124480. Its totient is φ = 221708592.

The previous prime is 665343971. The next prime is 665344007. The reversal of 665344002 is 200443566.

It is not an unprimeable number, because it can be changed into a prime (665344007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3648 + ... + 36660.

It is an arithmetic number, because the mean of its divisors is an integer number (83195280).

Almost surely, 2^665344002 is an apocalyptic number.

665344002 is an abundant number, since it is smaller than the sum of its proper divisors (665780478).

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

665344002 is a wasteful number, since it uses less digits than its factorization.

665344002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36377.

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 665344002 is about 25794.2629667917. The cubic root of 665344002 is about 873.0023552380.

Adding to 665344002 its reverse (200443566), we get a palindrome (865787568).

The spelling of 665344002 in words is "six hundred sixty-five million, three hundred forty-four thousand, two".