1680960 has 112 divisors (see below), whose sum is σ = 5705856. Its totient is φ = 417792.

The previous prime is 1680929. The next prime is 1680961. The reversal of 1680960 is 690861.

It is a Harshad number since it is a multiple of its sum of digits (30).

1680960 is a Rhonda number in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16269 + ... + 16371.

2^1680960 is an apocalyptic number.

1680960 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 1680960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2852928).

1680960 is an abundant number, since it is smaller than the sum of its proper divisors (4024896).

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

1680960 is a wasteful number, since it uses less digits than its factorization.

1680960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 1680960 is about 1296.5184148326. The cubic root of 1680960 is about 118.9010782558.

Subtracting from 1680960 its reverse (690861), we obtain a palindrome (990099).

The spelling of 1680960 in words is "one million, six hundred eighty thousand, nine hundred sixty".