330491 has 8 divisors (see below), whose sum is σ = 390144. Its totient is φ = 273960.

The previous prime is 330469. The next prime is 330509. The reversal of 330491 is 194033.

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 330491 - 2⁶ = 330427 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 330491.

It is not an unprimeable number, because it can be changed into a prime (330431) 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 7 ways as a sum of consecutive naturals, for example, 545 + ... + 978.

It is an arithmetic number, because the mean of its divisors is an integer number (48768).

2³³⁰⁴⁹¹ is an apocalyptic number.

330491 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

330491 is a deficient number, since it is larger than the sum of its proper divisors (59653).

330491 is a wasteful number, since it uses less digits than its factorization.

330491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1561.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 330491 is about 574.8834664521. The cubic root of 330491 is about 69.1384882233.

The spelling of 330491 in words is "three hundred thirty thousand, four hundred ninety-one".