665004424 has 16 divisors (see below), whose sum is σ = 1425009600. Its totient is φ = 285001872.

The previous prime is 665004401. The next prime is 665004449. The reversal of 665004424 is 424400566.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5937484 + ... + 5937595.

It is an arithmetic number, because the mean of its divisors is an integer number (89063100).

Almost surely, 2^665004424 is an apocalyptic number.

It is an amenable number.

665004424 is an abundant number, since it is smaller than the sum of its proper divisors (760005176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

665004424 is a wasteful number, since it uses less digits than its factorization.

665004424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11875092 (or 11875088 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 665004424 is about 25787.6796939934. The cubic root of 665004424 is about 872.8538091016.

The spelling of 665004424 in words is "six hundred sixty-five million, four thousand, four hundred twenty-four".