330805 has 4 divisors (see below), whose sum is σ = 396972. Its totient is φ = 264640.

The previous prime is 330793. The next prime is 330821. The reversal of 330805 is 508033.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 237169 + 93636 = 487^2 + 306^2 .

It is not a de Polignac number, because 330805 - 2¹³ = 322613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33076 + ... + 33085.

It is an arithmetic number, because the mean of its divisors is an integer number (99243).

2³³⁰⁸⁰⁵ is an apocalyptic number.

It is an amenable number.

330805 is a deficient number, since it is larger than the sum of its proper divisors (66167).

330805 is an equidigital number, since it uses as much as digits as its factorization.

330805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66166.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 330805 is about 575.1565004414. The cubic root of 330805 is about 69.1603774866.

Adding to 330805 its reverse (508033), we get a palindrome (838838).

The spelling of 330805 in words is "three hundred thirty thousand, eight hundred five".