326665 has 8 divisors (see below), whose sum is σ = 397440. Its totient is φ = 257712.

The previous prime is 326663. The next prime is 326681. The reversal of 326665 is 566623.

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

It is a cyclic number.

It is not a de Polignac number, because 326665 - 2¹ = 326663 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (326663) 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, 19 + ... + 808.

It is an arithmetic number, because the mean of its divisors is an integer number (49680).

2³²⁶⁶⁶⁵ is an apocalyptic number.

It is an amenable number.

326665 is a deficient number, since it is larger than the sum of its proper divisors (70775).

326665 is an equidigital number, since it uses as much as digits as its factorization.

326665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911.

The product of its digits is 6480, while the sum is 28.

The square root of 326665 is about 571.5461486179. The cubic root of 326665 is about 68.8706531491.

The spelling of 326665 in words is "three hundred twenty-six thousand, six hundred sixty-five".