1680204 has 24 divisors (see below), whose sum is σ = 3949120. Its totient is φ = 555984.

The previous prime is 1680191. The next prime is 1680247. The reversal of 1680204 is 4020861.

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, 1527 + ... + 2385.

2^1680204 is an apocalyptic number.

It is an amenable number.

1680204 is an abundant number, since it is smaller than the sum of its proper divisors (2268916).

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

1680204 is a wasteful number, since it uses less digits than its factorization.

1680204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029 (or 1027 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1680204 is about 1296.2268320013. The cubic root of 1680204 is about 118.8832506069.

The spelling of 1680204 in words is "one million, six hundred eighty thousand, two hundred four".