689083723 has 2 divisors, whose sum is σ = 689083724. Its totient is φ = 689083722.

The previous prime is 689083709. The next prime is 689083751. The reversal of 689083723 is 327380986.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 689083723 - 2⁹ = 689083211 is a prime.

It is not a weakly prime, because it can be changed into another prime (689083223) 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 as a sum of consecutive naturals, namely, 344541861 + 344541862.

It is an arithmetic number, because the mean of its divisors is an integer number (344541862).

Almost surely, 2^689083723 is an apocalyptic number.

689083723 is a deficient number, since it is larger than the sum of its proper divisors (1).

689083723 is an equidigital number, since it uses as much as digits as its factorization.

689083723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 689083723 is about 26250.4042445064. The cubic root of 689083723 is about 883.2642724537.

The spelling of 689083723 in words is "six hundred eighty-nine million, eighty-three thousand, seven hundred twenty-three".