665111032 has 16 divisors (see below), whose sum is σ = 1255028760. Its totient is φ = 330436704.

The previous prime is 665111021. The next prime is 665111039. The reversal of 665111032 is 230111566.

It is a junction number, because it is equal to n+sod(n) for n = 665110988 and 665111006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665111039) 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, 263518 + ... + 266029.

Almost surely, 2^665111032 is an apocalyptic number.

It is an amenable number.

665111032 is a deficient number, since it is larger than the sum of its proper divisors (589917728).

665111032 is a wasteful number, since it uses less digits than its factorization.

665111032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529710 (or 529706 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 665111032 is about 25789.7466447424. The cubic root of 665111032 is about 872.9004495065.

Adding to 665111032 its reverse (230111566), we get a palindrome (895222598).

The spelling of 665111032 in words is "six hundred sixty-five million, one hundred eleven thousand, thirty-two".