87118211 has 8 divisors (see below), whose sum is σ = 92809920. Its totient is φ = 81537192.

The previous prime is 87118189. The next prime is 87118219. The reversal of 87118211 is 11281178.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87118211 - 2⁶ = 87118147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87118219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26045 + ... + 29198.

It is an arithmetic number, because the mean of its divisors is an integer number (11601240).

Almost surely, 2^87118211 is an apocalyptic number.

87118211 is a deficient number, since it is larger than the sum of its proper divisors (5691709).

87118211 is a wasteful number, since it uses less digits than its factorization.

87118211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55345.

The product of its digits is 896, while the sum is 29.

The square root of 87118211 is about 9333.7136767741. The cubic root of 87118211 is about 443.3053604501.

Adding to 87118211 its reverse (11281178), we get a palindrome (98399389).

The spelling of 87118211 in words is "eighty-seven million, one hundred eighteen thousand, two hundred eleven".