1081680 has 40 divisors (see below), whose sum is σ = 3353952. Its totient is φ = 288384.

The previous prime is 1081679. The next prime is 1081681. The reversal of 1081680 is 861801.

It is an interprime number because it is at equal distance from previous prime (1081679) and next prime (1081681).

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

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1081680.

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 (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2014 + ... + 2493.

2^1081680 is an apocalyptic number.

1081680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1081680 is an abundant number, since it is smaller than the sum of its proper divisors (2272272).

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

1081680 is a wasteful number, since it uses less digits than its factorization.

1081680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4523 (or 4517 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 1081680 is about 1040.0384608273. The cubic root of 1081680 is about 102.6517284913.

The spelling of 1081680 in words is "one million, eighty-one thousand, six hundred eighty".