665335 has 8 divisors (see below), whose sum is σ = 871056. Its totient is φ = 483840.

The previous prime is 665311. The next prime is 665351. The reversal of 665335 is 533566.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 665335 - 2⁵ = 665303 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5994 + ... + 6103.

It is an arithmetic number, because the mean of its divisors is an integer number (108882).

2⁶⁶⁵³³⁵ is an apocalyptic number.

665335 is a deficient number, since it is larger than the sum of its proper divisors (205721).

665335 is a wasteful number, since it uses less digits than its factorization.

665335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12113.

The product of its digits is 8100, while the sum is 28.

The square root of 665335 is about 815.6806973320. The cubic root of 665335 is about 87.2998418025.

Subtracting from 665335 its reverse (533566), we obtain a square (131769 = 363²).

It can be divided in two parts, 665 and 335, that added together give a cube (1000 = 10³).

The spelling of 665335 in words is "six hundred sixty-five thousand, three hundred thirty-five".