665382 has 16 divisors (see below), whose sum is σ = 1362240. Its totient is φ = 216552.

The previous prime is 665381. The next prime is 665387. The reversal of 665382 is 283566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1032 + ... + 1547.

It is an arithmetic number, because the mean of its divisors is an integer number (85140).

2⁶⁶⁵³⁸² is an apocalyptic number.

665382 is an abundant number, since it is smaller than the sum of its proper divisors (696858).

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

665382 is a wasteful number, since it uses less digits than its factorization.

665382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2627.

The product of its digits is 8640, while the sum is 30.

The square root of 665382 is about 815.7095071164. The cubic root of 665382 is about 87.3018974066.

The spelling of 665382 in words is "six hundred sixty-five thousand, three hundred eighty-two".