89715986865 has 24 divisors (see below), whose sum is σ = 155534177448. Its totient is φ = 47840382720.

The previous prime is 89715986839. The next prime is 89715986887. The reversal of 89715986865 is 56868951798.

It can be written as a sum of positive squares in 4 ways, for example, as 334121841 + 89381865024 = 18279^2 + 298968^2 .

It is not a de Polignac number, because 89715986865 - 2¹¹ = 89715984817 is a prime.

It is a super-3 number, since 3×89715986865³ (a number of 34 digits) contains 333 as substring.

89715986865 is a modest number, since divided by 986865 gives 89715 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 89715986793 and 89715986802.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102477 + ... + 435813.

It is an arithmetic number, because the mean of its divisors is an integer number (6480590727).

Almost surely, 2^89715986865 is an apocalyptic number.

It is an amenable number.

89715986865 is a deficient number, since it is larger than the sum of its proper divisors (65818190583).

89715986865 is a wasteful number, since it uses less digits than its factorization.

89715986865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339329 (or 339326 counting only the distinct ones).

The product of its digits is 261273600, while the sum is 72.

The spelling of 89715986865 in words is "eighty-nine billion, seven hundred fifteen million, nine hundred eighty-six thousand, eight hundred sixty-five".