665308 has 12 divisors (see below), whose sum is σ = 1330672. Its totient is φ = 285120.

The previous prime is 665303. The next prime is 665311. The reversal of 665308 is 803566.

665308 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

665308 is an admirable number.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 23761 = 665308 / (6 + 6 + 5 + 3 + 0 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665303) 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, 11853 + ... + 11908.

2⁶⁶⁵³⁰⁸ is an apocalyptic number.

It is an amenable number.

665308 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

665308 is a wasteful number, since it uses less digits than its factorization.

665308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23772 (or 23770 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 665308 is about 815.6641465701. The cubic root of 665308 is about 87.2986608798.

The spelling of 665308 in words is "six hundred sixty-five thousand, three hundred eight".