87005531089 has 9 divisors (see below), whose sum is σ = 92429887771. Its totient is φ = 81882839200.

The previous prime is 87005531069. The next prime is 87005531149. The reversal of 87005531089 is 98013550078.

The square root of 87005531089 is 294967.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 67737870225 + 19267660864 = 260265^2 + 138808^2 .

It is not a de Polignac number, because 87005531089 - 2¹¹ = 87005529041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87005531069) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5005764 + ... + 5023114.

Almost surely, 2^87005531089 is an apocalyptic number.

87005531089 is the 294967-th square number.

87005531089 is the 147484-th centered octagonal number.

It is an amenable number.

87005531089 is a deficient number, since it is larger than the sum of its proper divisors (5424356682).

87005531089 is an frugal number, since it uses more digits than its factorization.

87005531089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34736 (or 17368 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 46.

The spelling of 87005531089 in words is "eighty-seven billion, five million, five hundred thirty-one thousand, eighty-nine".