1679723 has 2 divisors, whose sum is σ = 1679724. Its totient is φ = 1679722.

The previous prime is 1679701. The next prime is 1679773. The reversal of 1679723 is 3279761.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1679723 - 2⁶ = 1679659 is a prime.

It is a d-powerful number, because it can be written as 1 + 6⁸ + 7 + 9 + 7 + 2 + 3⁴ .

It is not a weakly prime, because it can be changed into another prime (1679773) 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, 839861 + 839862.

It is an arithmetic number, because the mean of its divisors is an integer number (839862).

2^1679723 is an apocalyptic number.

1679723 is a deficient number, since it is larger than the sum of its proper divisors (1).

1679723 is an equidigital number, since it uses as much as digits as its factorization.

1679723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15876, while the sum is 35.

The square root of 1679723 is about 1296.0412802068. The cubic root of 1679723 is about 118.8719050994.

The spelling of 1679723 in words is "one million, six hundred seventy-nine thousand, seven hundred twenty-three".