665230 has 8 divisors (see below), whose sum is σ = 1197432. Its totient is φ = 266088.

The previous prime is 665221. The next prime is 665233. The reversal of 665230 is 32566.

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

It is a d-powerful number, because it can be written as 6⁴ + 6⁴ + 2¹⁷ + 5³ + 3¹² + 0 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665233) 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, 33252 + ... + 33271.

It is an arithmetic number, because the mean of its divisors is an integer number (149679).

2⁶⁶⁵²³⁰ is an apocalyptic number.

665230 is a deficient number, since it is larger than the sum of its proper divisors (532202).

665230 is a wasteful number, since it uses less digits than its factorization.

665230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66530.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 665230 is about 815.6163313716. The cubic root of 665230 is about 87.2952491459.

Adding to 665230 its reverse (32566), we get a palindrome (697796).

The spelling of 665230 in words is "six hundred sixty-five thousand, two hundred thirty".