1680793 has 2 divisors, whose sum is σ = 1680794. Its totient is φ = 1680792.

The previous prime is 1680787. The next prime is 1680803. The reversal of 1680793 is 3970861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 927369 + 753424 = 963^2 + 868^2 .

It is a cyclic number.

It is not a de Polignac number, because 1680793 - 2⁵ = 1680761 is a prime.

It is not a weakly prime, because it can be changed into another prime (1680703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 840396 + 840397.

It is an arithmetic number, because the mean of its divisors is an integer number (840397).

2^1680793 is an apocalyptic number.

It is an amenable number.

1680793 is a deficient number, since it is larger than the sum of its proper divisors (1).

1680793 is an equidigital number, since it uses as much as digits as its factorization.

1680793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 1680793 is about 1296.4540099826. The cubic root of 1680793 is about 118.8971405976.

It can be divided in two parts, 16807 and 93, that added together give a square (16900 = 130²).

The spelling of 1680793 in words is "one million, six hundred eighty thousand, seven hundred ninety-three".