98666666689 has 4 divisors (see below), whose sum is σ = 98803895040. Its totient is φ = 98529438340.

The previous prime is 98666666677. The next prime is 98666666717.

98666666689 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 98666666689 - 2⁷ = 98666666561 is a prime.

It is a super-2 number, since 2×98666666689² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98666667689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68613097 + ... + 68614534.

It is an arithmetic number, because the mean of its divisors is an integer number (24700973760).

Almost surely, 2^98666666689 is an apocalyptic number.

It is an amenable number.

98666666689 is a deficient number, since it is larger than the sum of its proper divisors (137228351).

98666666689 is a wasteful number, since it uses less digits than its factorization.

98666666689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137228350.

The product of its digits is 1451188224, while the sum is 76.

The spelling of 98666666689 in words is "ninety-eight billion, six hundred sixty-six million, six hundred sixty-six thousand, six hundred eighty-nine".