1330997 has 2 divisors, whose sum is σ = 1330998. Its totient is φ = 1330996.

The previous prime is 1330963. The next prime is 1331023. The reversal of 1330997 is 7990331.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 972196 + 358801 = 986^2 + 599^2 .

It is a cyclic number.

It is not a de Polignac number, because 1330997 - 2⁶ = 1330933 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1330957) 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 as a sum of consecutive naturals, namely, 665498 + 665499.

It is an arithmetic number, because the mean of its divisors is an integer number (665499).

2^1330997 is an apocalyptic number.

It is an amenable number.

1330997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1330997 is an equidigital number, since it uses as much as digits as its factorization.

1330997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5103, while the sum is 32.

The square root of 1330997 is about 1153.6884328102. The cubic root of 1330997 is about 109.9999173553. Note that the first 4 decimals are identical.

The spelling of 1330997 in words is "one million, three hundred thirty thousand, nine hundred ninety-seven".