98666667689 has 2 divisors, whose sum is σ = 98666667690. Its totient is φ = 98666667688.

The previous prime is 98666667683. The next prime is 98666667703. The reversal of 98666667689 is 98676666689.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91495965289 + 7170702400 = 302483^2 + 84680^2 .

It is an emirp because it is prime and its reverse (98676666689) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 98666667689 - 2¹² = 98666663593 is a prime.

It is a super-2 number, since 2×98666667689² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (98666667683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49333333844 + 49333333845.

It is an arithmetic number, because the mean of its divisors is an integer number (49333333845).

Almost surely, 2^98666667689 is an apocalyptic number.

It is an amenable number.

98666667689 is a deficient number, since it is larger than the sum of its proper divisors (1).

98666667689 is an equidigital number, since it uses as much as digits as its factorization.

98666667689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1693052928, while the sum is 77.

The spelling of 98666667689 in words is "ninety-eight billion, six hundred sixty-six million, six hundred sixty-seven thousand, six hundred eighty-nine".