665132 has 12 divisors (see below), whose sum is σ = 1253616. Its totient is φ = 306960.

The previous prime is 665131. The next prime is 665141. The reversal of 665132 is 231566.

It is a plaindrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 665098 and 665107.

It is not an unprimeable number, because it can be changed into a prime (665131) 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, 6344 + ... + 6447.

It is an arithmetic number, because the mean of its divisors is an integer number (104468).

2⁶⁶⁵¹³² is an apocalyptic number.

It is an amenable number.

665132 is a deficient number, since it is larger than the sum of its proper divisors (588484).

665132 is a wasteful number, since it uses less digits than its factorization.

665132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12808 (or 12806 counting only the distinct ones).

The product of its digits is 1080, while the sum is 23.

The square root of 665132 is about 815.5562518919. The cubic root of 665132 is about 87.2909622303.

Adding to 665132 its reverse (231566), we get a palindrome (896698).

It can be divided in two parts, 665 and 132, that added together give a palindrome (797).

The spelling of 665132 in words is "six hundred sixty-five thousand, one hundred thirty-two".