689128608611 has 16 divisors (see below), whose sum is σ = 736588258560. Its totient is φ = 642812254560.

The previous prime is 689128608583. The next prime is 689128608613. The reversal of 689128608611 is 116806821986.

It is a cyclic number.

It is not a de Polignac number, because 689128608611 - 2²⁶ = 689061499747 is a prime.

It is a super-2 number, since 2×689128608611² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (689128608613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 683780 + ... + 1358606.

It is an arithmetic number, because the mean of its divisors is an integer number (46036766160).

Almost surely, 2^689128608611 is an apocalyptic number.

689128608611 is a deficient number, since it is larger than the sum of its proper divisors (47459649949).

689128608611 is a wasteful number, since it uses less digits than its factorization.

689128608611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675674.

The product of its (nonzero) digits is 1990656, while the sum is 56.

The spelling of 689128608611 in words is "six hundred eighty-nine billion, one hundred twenty-eight million, six hundred eight thousand, six hundred eleven".