665303003 has 4 divisors (see below), whose sum is σ = 673724640. Its totient is φ = 656881368.

The previous prime is 665302987. The next prime is 665303021. The reversal of 665303003 is 300303566.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 300303566 = 2 ⋅150151783.

It is a cyclic number.

It is not a de Polignac number, because 665303003 - 2⁴ = 665302987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (665303033) 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, 4210700 + ... + 4210857.

It is an arithmetic number, because the mean of its divisors is an integer number (168431160).

Almost surely, 2^665303003 is an apocalyptic number.

665303003 is a deficient number, since it is larger than the sum of its proper divisors (8421637).

665303003 is an equidigital number, since it uses as much as digits as its factorization.

665303003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8421636.

The product of its (nonzero) digits is 4860, while the sum is 26.

The square root of 665303003 is about 25793.4682235639. The cubic root of 665303003 is about 872.9844231814.

Adding to 665303003 its reverse (300303566), we get a palindrome (965606569).

The spelling of 665303003 in words is "six hundred sixty-five million, three hundred three thousand, three".