98713561 has 4 divisors (see below), whose sum is σ = 99619300. Its totient is φ = 97807824.

The previous prime is 98713553. The next prime is 98713567. The reversal of 98713561 is 16531789.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64561225 + 34152336 = 8035^2 + 5844^2 .

It is a cyclic number.

It is not a de Polignac number, because 98713561 - 2³ = 98713553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98713567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 452706 + ... + 452923.

It is an arithmetic number, because the mean of its divisors is an integer number (24904825).

Almost surely, 2^98713561 is an apocalyptic number.

It is an amenable number.

98713561 is a deficient number, since it is larger than the sum of its proper divisors (905739).

98713561 is a wasteful number, since it uses less digits than its factorization.

98713561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905738.

The product of its digits is 45360, while the sum is 40.

The square root of 98713561 is about 9935.4698429415. The cubic root of 98713561 is about 462.1599132212.

The spelling of 98713561 in words is "ninety-eight million, seven hundred thirteen thousand, five hundred sixty-one".