98644689 has 64 divisors (see below), whose sum is σ = 177811200. Its totient is φ = 53222400.

The previous prime is 98644657. The next prime is 98644717.

98644689 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 98644689 - 2⁵ = 98644657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (98644639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 111529 + ... + 112409.

It is an arithmetic number, because the mean of its divisors is an integer number (2778300).

Almost surely, 2^98644689 is an apocalyptic number.

98644689 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

It is an amenable number.

98644689 is a deficient number, since it is larger than the sum of its proper divisors (79166511).

98644689 is a wasteful number, since it uses less digits than its factorization.

98644689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943 (or 937 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The square root of 98644689 is about 9932.0032722508. The cubic root of 98644689 is about 462.0524059291.

The spelling of 98644689 in words is "ninety-eight million, six hundred forty-four thousand, six hundred eighty-nine".