98697089605 has 4 divisors (see below), whose sum is σ = 118436507532. Its totient is φ = 78957671680.

The previous prime is 98697089581. The next prime is 98697089609. The reversal of 98697089605 is 50698079689.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50698079689 = 41 ⋅1236538529.

It can be written as a sum of positive squares in 2 ways, for example, as 72618392484 + 26078697121 = 269478^2 + 161489^2 .

It is not a de Polignac number, because 98697089605 - 2⁹ = 98697089093 is a prime.

It is a super-2 number, since 2×98697089605² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98697089609) 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 3 ways as a sum of consecutive naturals, for example, 9869708956 + ... + 9869708965.

It is an arithmetic number, because the mean of its divisors is an integer number (29609126883).

Almost surely, 2^98697089605 is an apocalyptic number.

It is an amenable number.

98697089605 is a deficient number, since it is larger than the sum of its proper divisors (19739417927).

98697089605 is a wasteful number, since it uses less digits than its factorization.

98697089605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19739417926.

The product of its (nonzero) digits is 58786560, while the sum is 67.

The spelling of 98697089605 in words is "ninety-eight billion, six hundred ninety-seven million, eighty-nine thousand, six hundred five".