1329697 has 4 divisors (see below), whose sum is σ = 1332036. Its totient is φ = 1327360.

The previous prime is 1329673. The next prime is 1329701. The reversal of 1329697 is 7969231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 776161 + 553536 = 881^2 + 744^2 .

It is a cyclic number.

It is not a de Polignac number, because 1329697 - 2⁷ = 1329569 is a prime.

It is a super-2 number, since 2×1329697² = 3536188223618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1329637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297 + ... + 1657.

It is an arithmetic number, because the mean of its divisors is an integer number (333009).

2^1329697 is an apocalyptic number.

It is an amenable number.

1329697 is a deficient number, since it is larger than the sum of its proper divisors (2339).

1329697 is an equidigital number, since it uses as much as digits as its factorization.

1329697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2338.

The product of its digits is 20412, while the sum is 37.

The square root of 1329697 is about 1153.1248848238. The cubic root of 1329697 is about 109.9640929634.

The spelling of 1329697 in words is "one million, three hundred twenty-nine thousand, six hundred ninety-seven".