665832912 has 20 divisors (see below), whose sum is σ = 1720068480. Its totient is φ = 221944288.

The previous prime is 665832901. The next prime is 665832913. The reversal of 665832912 is 219238566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665832913) 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, 6935712 + ... + 6935807.

It is an arithmetic number, because the mean of its divisors is an integer number (86003424).

Almost surely, 2^665832912 is an apocalyptic number.

It is an amenable number.

665832912 is an abundant number, since it is smaller than the sum of its proper divisors (1054235568).

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

665832912 is a wasteful number, since it uses less digits than its factorization.

665832912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13871530 (or 13871524 counting only the distinct ones).

The product of its digits is 155520, while the sum is 42.

The square root of 665832912 is about 25803.7383338151. The cubic root of 665832912 is about 873.2161369195.

The spelling of 665832912 in words is "six hundred sixty-five million, eight hundred thirty-two thousand, nine hundred twelve".