665313432 has 64 divisors (see below), whose sum is σ = 1902942720. Its totient is φ = 189884928.

The previous prime is 665313421. The next prime is 665313449. The reversal of 665313432 is 234313566.

665313432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 665313393 and 665313402.

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, 228208 + ... + 231104.

It is an arithmetic number, because the mean of its divisors is an integer number (29733480).

Almost surely, 2^665313432 is an apocalyptic number.

It is an amenable number.

665313432 is an abundant number, since it is smaller than the sum of its proper divisors (1237629288).

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

665313432 is a wasteful number, since it uses less digits than its factorization.

665313432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4280 (or 4276 counting only the distinct ones).

The product of its digits is 38880, while the sum is 33.

The square root of 665313432 is about 25793.6703863564. The cubic root of 665313432 is about 872.9889846654.

Adding to 665313432 its reverse (234313566), we get a palindrome (899626998).

The spelling of 665313432 in words is "six hundred sixty-five million, three hundred thirteen thousand, four hundred thirty-two".