665411412 has 24 divisors (see below), whose sum is σ = 1588735456. Its totient is φ = 216645408.

The previous prime is 665411401. The next prime is 665411423. The reversal of 665411412 is 214114566.

It is an interprime number because it is at equal distance from previous prime (665411401) and next prime (665411423).

It is a self number, because there is not a number n which added to its sum of digits gives 665411412.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 644263 + ... + 645294.

Almost surely, 2^665411412 is an apocalyptic number.

It is an amenable number.

665411412 is an abundant number, since it is smaller than the sum of its proper divisors (923324044).

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

665411412 is a wasteful number, since it uses less digits than its factorization.

665411412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289607 (or 1289605 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 665411412 is about 25795.5696196072. The cubic root of 665411412 is about 873.0318372810.

Adding to 665411412 its reverse (214114566), we get a palindrome (879525978).

The spelling of 665411412 in words is "six hundred sixty-five million, four hundred eleven thousand, four hundred twelve".