665143003 has 48 divisors (see below), whose sum is σ = 864302400. Its totient is φ = 507623424.

The previous prime is 665143001. The next prime is 665143007. The reversal of 665143003 is 300341566.

It is not a de Polignac number, because 665143003 - 2¹ = 665143001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (665143001) 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 47 ways as a sum of consecutive naturals, for example, 2854575 + ... + 2854807.

It is an arithmetic number, because the mean of its divisors is an integer number (18006300).

Almost surely, 2^665143003 is an apocalyptic number.

665143003 is a deficient number, since it is larger than the sum of its proper divisors (199159397).

665143003 is a wasteful number, since it uses less digits than its factorization.

665143003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436 (or 429 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 665143003 is about 25790.3664766517. The cubic root of 665143003 is about 872.9144356691.

Adding to 665143003 its reverse (300341566), we get a palindrome (965484569).

The spelling of 665143003 in words is "six hundred sixty-five million, one hundred forty-three thousand, three".