1680799 has 4 divisors (see below), whose sum is σ = 1726264. Its totient is φ = 1635336.

The previous prime is 1680793. The next prime is 1680803. The reversal of 1680799 is 9970861.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1680799 - 2¹¹ = 1678751 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22677 + ... + 22750.

It is an arithmetic number, because the mean of its divisors is an integer number (431566).

2^1680799 is an apocalyptic number.

1680799 is a deficient number, since it is larger than the sum of its proper divisors (45465).

1680799 is an equidigital number, since it uses as much as digits as its factorization.

1680799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45464.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 1680799 is about 1296.4563239847. The cubic root of 1680799 is about 118.8972820749.

The spelling of 1680799 in words is "one million, six hundred eighty thousand, seven hundred ninety-nine".