1680968 has 16 divisors (see below), whose sum is σ = 3318000. Its totient is φ = 796176.

The previous prime is 1680967. The next prime is 1680979. The reversal of 1680968 is 8690861.

It is a Harshad number since it is a multiple of its sum of digits (38).

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 3 ways as a sum of consecutive naturals, for example, 5378 + ... + 5681.

It is an arithmetic number, because the mean of its divisors is an integer number (207375).

2^1680968 is an apocalyptic number.

It is an amenable number.

1680968 is a deficient number, since it is larger than the sum of its proper divisors (1637032).

1680968 is a wasteful number, since it uses less digits than its factorization.

1680968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11084 (or 11080 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 1680968 is about 1296.5215000146. The cubic root of 1680968 is about 118.9012668796.

The spelling of 1680968 in words is "one million, six hundred eighty thousand, nine hundred sixty-eight".