1081685 has 16 divisors (see below), whose sum is σ = 1441152. Its totient is φ = 772800.

The previous prime is 1081681. The next prime is 1081687. The reversal of 1081685 is 5861801.

It is not a de Polignac number, because 1081685 - 2² = 1081681 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081681) 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 15 ways as a sum of consecutive naturals, for example, 3767 + ... + 4043.

It is an arithmetic number, because the mean of its divisors is an integer number (90072).

2^1081685 is an apocalyptic number.

It is an amenable number.

1081685 is a deficient number, since it is larger than the sum of its proper divisors (359467).

1081685 is a wasteful number, since it uses less digits than its factorization.

1081685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364.

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 1081685 is about 1040.0408645818. The cubic root of 1081685 is about 102.6518866582.

It can be divided in two parts, 10816 and 85, that added together give a palindrome (10901).

The spelling of 1081685 in words is "one million, eighty-one thousand, six hundred eighty-five".