98686589905 has 8 divisors (see below), whose sum is σ = 118430711784. Its totient is φ = 78944736000.

The previous prime is 98686589899. The next prime is 98686589917. The reversal of 98686589905 is 50998568689.

It can be written as a sum of positive squares in 4 ways, for example, as 7680594321 + 91005995584 = 87639^2 + 301672^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 98686589905 - 2⁷ = 98686589777 is a prime.

It is a super-3 number, since 3×98686589905³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 469746 + ... + 646555.

It is an arithmetic number, because the mean of its divisors is an integer number (14803838973).

Almost surely, 2^98686589905 is an apocalyptic number.

It is an amenable number.

98686589905 is a deficient number, since it is larger than the sum of its proper divisors (19744121879).

98686589905 is a wasteful number, since it uses less digits than its factorization.

98686589905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1133987.

The product of its (nonzero) digits is 335923200, while the sum is 73.

The spelling of 98686589905 in words is "ninety-eight billion, six hundred eighty-six million, five hundred eighty-nine thousand, nine hundred five".