665332 has 12 divisors (see below), whose sum is σ = 1189440. Its totient is φ = 325496.

The previous prime is 665311. The next prime is 665351. The reversal of 665332 is 233566.

665332 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 14.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 665297 and 665306.

It is a congruent number.

It is an unprimeable number.

665332 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1582 + ... + 1957.

It is an arithmetic number, because the mean of its divisors is an integer number (99120).

2⁶⁶⁵³³² is an apocalyptic number.

It is an amenable number.

665332 is a deficient number, since it is larger than the sum of its proper divisors (524108).

665332 is a wasteful number, since it uses less digits than its factorization.

665332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3590 (or 3588 counting only the distinct ones).

The product of its digits is 3240, while the sum is 25.

The square root of 665332 is about 815.6788583750. The cubic root of 665332 is about 87.2997105905.

Adding to 665332 its reverse (233566), we get a palindrome (898898).

It can be divided in two parts, 665 and 332, that multiplied together give a triangular number (220780 = T₆₆₄).

The spelling of 665332 in words is "six hundred sixty-five thousand, three hundred thirty-two".