1680268 has 12 divisors (see below), whose sum is σ = 3009160. Its totient is φ = 820512.

The previous prime is 1680253. The next prime is 1680269. The reversal of 1680268 is 8620861.

It is not an unprimeable number, because it can be changed into a prime (1680269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4713 + ... + 5056.

2^1680268 is an apocalyptic number.

It is an amenable number.

1680268 is a deficient number, since it is larger than the sum of its proper divisors (1328892).

1680268 is a wasteful number, since it uses less digits than its factorization.

1680268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9816 (or 9814 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 1680268 is about 1296.2515188034. The cubic root of 1680268 is about 118.8847600330.

The spelling of 1680268 in words is "one million, six hundred eighty thousand, two hundred sixty-eight".