1330505 has 16 divisors (see below), whose sum is σ = 1845504. Its totient is φ = 910080.

The previous prime is 1330501. The next prime is 1330519. The reversal of 1330505 is 5050331.

It is not a de Polignac number, because 1330505 - 2² = 1330501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1330501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224 + ... + 1646.

It is an arithmetic number, because the mean of its divisors is an integer number (115344).

2^1330505 is an apocalyptic number.

It is an amenable number.

1330505 is a deficient number, since it is larger than the sum of its proper divisors (514999).

1330505 is a wasteful number, since it uses less digits than its factorization.

1330505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456.

The product of its (nonzero) digits is 225, while the sum is 17.

The square root of 1330505 is about 1153.4751839550. The cubic root of 1330505 is about 109.9863619456.

Adding to 1330505 its reverse (5050331), we get a palindrome (6380836).

The spelling of 1330505 in words is "one million, three hundred thirty thousand, five hundred five".