1330565 has 8 divisors (see below), whose sum is σ = 1627128. Its totient is φ = 1044160.

The previous prime is 1330559. The next prime is 1330577. The reversal of 1330565 is 5650331.

It can be written as a sum of positive squares in 4 ways, for example, as 516961 + 813604 = 719^2 + 902^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1330565 - 2⁶ = 1330501 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1330565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2246 + ... + 2775.

It is an arithmetic number, because the mean of its divisors is an integer number (203391).

2^1330565 is an apocalyptic number.

It is an amenable number.

1330565 is a deficient number, since it is larger than the sum of its proper divisors (296563).

1330565 is an equidigital number, since it uses as much as digits as its factorization.

1330565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5079.

The product of its (nonzero) digits is 1350, while the sum is 23.

The square root of 1330565 is about 1153.5011920237. The cubic root of 1330565 is about 109.9880152232.

Adding to 1330565 its reverse (5650331), we get a palindrome (6980896).

The spelling of 1330565 in words is "one million, three hundred thirty thousand, five hundred sixty-five".