665233507 has 2 divisors, whose sum is σ = 665233508. Its totient is φ = 665233506.

The previous prime is 665233501. The next prime is 665233559. The reversal of 665233507 is 705332566.

It is a happy number.

665233507 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 665233507 - 2¹¹ = 665231459 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (665233501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332616753 + 332616754.

It is an arithmetic number, because the mean of its divisors is an integer number (332616754).

Almost surely, 2^665233507 is an apocalyptic number.

665233507 is a deficient number, since it is larger than the sum of its proper divisors (1).

665233507 is an equidigital number, since it uses as much as digits as its factorization.

665233507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 113400, while the sum is 37.

The square root of 665233507 is about 25792.1210256156. The cubic root of 665233507 is about 872.9540254841.

The spelling of 665233507 in words is "six hundred sixty-five million, two hundred thirty-three thousand, five hundred seven".