1085680 has 40 divisors (see below), whose sum is σ = 2593584. Its totient is φ = 422400.

The previous prime is 1085677. The next prime is 1085681. The reversal of 1085680 is 865801.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1085681) 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 7 ways as a sum of consecutive naturals, for example, 3115 + ... + 3445.

2^1085680 is an apocalyptic number.

1085680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1085680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1296792).

1085680 is an abundant number, since it is smaller than the sum of its proper divisors (1507904).

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

1085680 is a wasteful number, since it uses less digits than its factorization.

1085680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385 (or 379 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 1085680 is about 1041.9596921187. The cubic root of 1085680 is about 102.7781065379.

The spelling of 1085680 in words is "one million, eighty-five thousand, six hundred eighty".