665833 has 8 divisors (see below), whose sum is σ = 771968. Its totient is φ = 562464.

The previous prime is 665813. The next prime is 665843. The reversal of 665833 is 338566.

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

It is not a de Polignac number, because 665833 - 2⁵ = 665801 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 665795 and 665804.

It is not an unprimeable number, because it can be changed into a prime (665803) 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, 141 + ... + 1162.

It is an arithmetic number, because the mean of its divisors is an integer number (96496).

2⁶⁶⁵⁸³³ is an apocalyptic number.

It is an amenable number.

665833 is a deficient number, since it is larger than the sum of its proper divisors (106135).

665833 is a wasteful number, since it uses less digits than its factorization.

665833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1383.

The product of its digits is 12960, while the sum is 31.

The square root of 665833 is about 815.9859067410. The cubic root of 665833 is about 87.3216175389.

The spelling of 665833 in words is "six hundred sixty-five thousand, eight hundred thirty-three".