665222003 has 2 divisors, whose sum is σ = 665222004. Its totient is φ = 665222002.

The previous prime is 665221987. The next prime is 665222069. The reversal of 665222003 is 300222566.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 665222003 - 2⁴ = 665221987 is a prime.

It is not a weakly prime, because it can be changed into another prime (665522003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332611001 + 332611002.

It is an arithmetic number, because the mean of its divisors is an integer number (332611002).

Almost surely, 2^665222003 is an apocalyptic number.

665222003 is a deficient number, since it is larger than the sum of its proper divisors (1).

665222003 is an equidigital number, since it uses as much as digits as its factorization.

665222003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 665222003 is about 25791.8980108095. The cubic root of 665222003 is about 872.9489934059.

Adding to 665222003 its reverse (300222566), we get a palindrome (965444569).

The spelling of 665222003 in words is "six hundred sixty-five million, two hundred twenty-two thousand, three".