665328430 has 32 divisors (see below), whose sum is σ = 1291348800. Its totient is φ = 245348352.

The previous prime is 665328421. The next prime is 665328449. The reversal of 665328430 is 34823566.

665328430 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 665328430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116686 + ... + 122254.

It is an arithmetic number, because the mean of its divisors is an integer number (40354650).

Almost surely, 2^665328430 is an apocalyptic number.

665328430 is a deficient number, since it is larger than the sum of its proper divisors (626020370).

665328430 is a wasteful number, since it uses less digits than its factorization.

665328430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6508.

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 665328430 is about 25793.9611149587. The cubic root of 665328430 is about 872.9955444761.

The spelling of 665328430 in words is "six hundred sixty-five million, three hundred twenty-eight thousand, four hundred thirty".