1330686 has 48 divisors (see below), whose sum is σ = 3369600. Its totient is φ = 371664.

The previous prime is 1330649. The next prime is 1330691. The reversal of 1330686 is 6860331.

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 23 ways as a sum of consecutive naturals, for example, 7345 + ... + 7523.

It is an arithmetic number, because the mean of its divisors is an integer number (70200).

2^1330686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1330686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1684800).

1330686 is an abundant number, since it is smaller than the sum of its proper divisors (2038914).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1330686 is a wasteful number, since it uses less digits than its factorization.

1330686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 1330686 is about 1153.5536398452. The cubic root of 1330686 is about 109.9913491819.

It can be divided in two parts, 1330 and 686, that added together give a triangular number (2016 = T₆₃).

The spelling of 1330686 in words is "one million, three hundred thirty thousand, six hundred eighty-six".