1330685 has 4 divisors (see below), whose sum is σ = 1596828. Its totient is φ = 1064544.

The previous prime is 1330649. The next prime is 1330691. The reversal of 1330685 is 5860331.

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 872356 + 458329 = 934^2 + 677^2 .

It is a cyclic number.

It is not a de Polignac number, because 1330685 - 2⁶ = 1330621 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133064 + ... + 133073.

It is an arithmetic number, because the mean of its divisors is an integer number (399207).

2^1330685 is an apocalyptic number.

It is an amenable number.

1330685 is a deficient number, since it is larger than the sum of its proper divisors (266143).

1330685 is an equidigital number, since it uses as much as digits as its factorization.

1330685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266142.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 1330685 is about 1153.5532064019. The cubic root of 1330685 is about 109.9913216294.

The spelling of 1330685 in words is "one million, three hundred thirty thousand, six hundred eighty-five".