330685 has 4 divisors (see below), whose sum is σ = 396828. Its totient is φ = 264544.

The previous prime is 330683. The next prime is 330689. The reversal of 330685 is 586033.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 586033 = 7 ⋅83719.

It can be written as a sum of positive squares in 2 ways, for example, as 198916 + 131769 = 446^2 + 363^2 .

It is a cyclic number.

It is not a de Polignac number, because 330685 - 2¹ = 330683 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (330683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33064 + ... + 33073.

It is an arithmetic number, because the mean of its divisors is an integer number (99207).

2³³⁰⁶⁸⁵ is an apocalyptic number.

It is an amenable number.

330685 is a deficient number, since it is larger than the sum of its proper divisors (66143).

330685 is an equidigital number, since it uses as much as digits as its factorization.

330685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66142.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 330685 is about 575.0521715462. The cubic root of 330685 is about 69.1520137990.

The spelling of 330685 in words is "three hundred thirty thousand, six hundred eighty-five".