665336 has 24 divisors (see below), whose sum is σ = 1438920. Its totient is φ = 282528.

The previous prime is 665311. The next prime is 665351. The reversal of 665336 is 633566.

665336 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 = 665299 and 665308.

It is a congruent number.

It is an unprimeable number.

665336 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 5 ways as a sum of consecutive naturals, for example, 6050 + ... + 6158.

It is an arithmetic number, because the mean of its divisors is an integer number (59955).

2⁶⁶⁵³³⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 665336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (719460).

665336 is an abundant number, since it is smaller than the sum of its proper divisors (773584).

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

665336 is a wasteful number, since it uses less digits than its factorization.

665336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231 (or 118 counting only the distinct ones).

The product of its digits is 9720, while the sum is 29.

The square root of 665336 is about 815.6813103167. The cubic root of 665336 is about 87.2998855398.

It can be divided in two parts, 665 and 336, that added together give a palindrome (1001).

The spelling of 665336 in words is "six hundred sixty-five thousand, three hundred thirty-six".