665267012 has 12 divisors (see below), whose sum is σ = 1167574800. Its totient is φ = 331674216.

The previous prime is 665266981. The next prime is 665267017. The reversal of 665267012 is 210762566.

665267012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (665267017) 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, 238262 + ... + 241037.

It is an arithmetic number, because the mean of its divisors is an integer number (97297900).

Almost surely, 2^665267012 is an apocalyptic number.

It is an amenable number.

665267012 is a deficient number, since it is larger than the sum of its proper divisors (502307788).

665267012 is a wasteful number, since it uses less digits than its factorization.

665267012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479650 (or 479648 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 665267012 is about 25792.7705374975. The cubic root of 665267012 is about 872.9686809062.

The spelling of 665267012 in words is "six hundred sixty-five million, two hundred sixty-seven thousand, twelve".