330997 has 2 divisors, whose sum is σ = 330998. Its totient is φ = 330996.

The previous prime is 330983. The next prime is 331013. The reversal of 330997 is 799033.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 329476 + 1521 = 574^2 + 39^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-330997 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (330907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165498 + 165499.

It is an arithmetic number, because the mean of its divisors is an integer number (165499).

2³³⁰⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

330997 is a deficient number, since it is larger than the sum of its proper divisors (1).

330997 is an equidigital number, since it uses as much as digits as its factorization.

330997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5103, while the sum is 31.

The square root of 330997 is about 575.3233873223. The cubic root of 330997 is about 69.1737551807.

The spelling of 330997 in words is "three hundred thirty thousand, nine hundred ninety-seven".