330220997 has 2 divisors, whose sum is σ = 330220998. Its totient is φ = 330220996.

The previous prime is 330220981. The next prime is 330221029. The reversal of 330220997 is 799022033.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 187991521 + 142229476 = 13711^2 + 11926^2 .

It is a cyclic number.

It is not a de Polignac number, because 330220997 - 2⁴ = 330220981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (330225997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165110498 + 165110499.

It is an arithmetic number, because the mean of its divisors is an integer number (165110499).

Almost surely, 2^330220997 is an apocalyptic number.

It is an amenable number.

330220997 is a deficient number, since it is larger than the sum of its proper divisors (1).

330220997 is an equidigital number, since it uses as much as digits as its factorization.

330220997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 330220997 is about 18171.9838487712. The cubic root of 330220997 is about 691.1965494675.

The spelling of 330220997 in words is "three hundred thirty million, two hundred twenty thousand, nine hundred ninety-seven".