689019071889 has 16 divisors (see below), whose sum is σ = 950407153920. Its totient is φ = 443489719680.

The previous prime is 689019071887. The next prime is 689019071899. The reversal of 689019071889 is 988170910986.

It is not a de Polignac number, because 689019071889 - 2¹ = 689019071887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (689019071887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2407629 + ... + 2678565.

It is an arithmetic number, because the mean of its divisors is an integer number (59400447120).

Almost surely, 2^689019071889 is an apocalyptic number.

It is an amenable number.

689019071889 is a deficient number, since it is larger than the sum of its proper divisors (261388082031).

689019071889 is a wasteful number, since it uses less digits than its factorization.

689019071889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300200.

The product of its (nonzero) digits is 15676416, while the sum is 66.

The spelling of 689019071889 in words is "six hundred eighty-nine billion, nineteen million, seventy-one thousand, eight hundred eighty-nine".