1680560 has 40 divisors (see below), whose sum is σ = 4466976. Its totient is φ = 576000.

The previous prime is 1680557. The next prime is 1680583. The reversal of 1680560 is 650861.

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

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 941 + ... + 2060.

2^1680560 is an apocalyptic number.

1680560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1680560 is an abundant number, since it is smaller than the sum of its proper divisors (2786416).

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

1680560 is a wasteful number, since it uses less digits than its factorization.

1680560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3021 (or 3015 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1680560 is about 1296.3641463725. The cubic root of 1680560 is about 118.8916463033.

The spelling of 1680560 in words is "one million, six hundred eighty thousand, five hundred sixty".