87211587 has 16 divisors (see below), whose sum is σ = 120296448. Its totient is φ = 56142240.

The previous prime is 87211559. The next prime is 87211591. The reversal of 87211587 is 78511278.

It is not a de Polignac number, because 87211587 - 2¹⁴ = 87195203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87211087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62833 + ... + 64205.

It is an arithmetic number, because the mean of its divisors is an integer number (7518528).

Almost surely, 2^87211587 is an apocalyptic number.

87211587 is a deficient number, since it is larger than the sum of its proper divisors (33084861).

87211587 is a wasteful number, since it uses less digits than its factorization.

87211587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2090.

The product of its digits is 31360, while the sum is 39.

The square root of 87211587 is about 9338.7144190194. The cubic root of 87211587 is about 443.4636867078.

The spelling of 87211587 in words is "eighty-seven million, two hundred eleven thousand, five hundred eighty-seven".