98657475687 has 20 divisors (see below), whose sum is σ = 149793244216. Its totient is φ = 64693423440.

The previous prime is 98657475673. The next prime is 98657475689. The reversal of 98657475687 is 78657475689.

98657475687 is a `hidden beast` number, since 9 + 8 + 6 + 57 + 4 + 7 + 568 + 7 = 666.

It is not a de Polignac number, because 98657475687 - 2⁸ = 98657475431 is a prime.

It is a super-2 number, since 2×98657475687² (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 (98657475689) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9978613 + ... + 9988494.

Almost surely, 2^98657475687 is an apocalyptic number.

98657475687 is a deficient number, since it is larger than the sum of its proper divisors (51135768529).

98657475687 is a wasteful number, since it uses less digits than its factorization.

98657475687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19967180 (or 19967171 counting only the distinct ones).

The product of its digits is 711244800, while the sum is 72.

The spelling of 98657475687 in words is "ninety-eight billion, six hundred fifty-seven million, four hundred seventy-five thousand, six hundred eighty-seven".