87318611 has 4 divisors (see below), whose sum is σ = 87854472. Its totient is φ = 86782752.

The previous prime is 87318607. The next prime is 87318617. The reversal of 87318611 is 11681378.

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

It is a cyclic number.

It is not a de Polignac number, because 87318611 - 2² = 87318607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87318617) 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 3 ways as a sum of consecutive naturals, for example, 267686 + ... + 268011.

It is an arithmetic number, because the mean of its divisors is an integer number (21963618).

Almost surely, 2^87318611 is an apocalyptic number.

87318611 is a deficient number, since it is larger than the sum of its proper divisors (535861).

87318611 is a wasteful number, since it uses less digits than its factorization.

87318611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535860.

The product of its digits is 8064, while the sum is 35.

The square root of 87318611 is about 9344.4427870259. The cubic root of 87318611 is about 443.6450152752.

Adding to 87318611 its reverse (11681378), we get a palindrome (98999989).

The spelling of 87318611 in words is "eighty-seven million, three hundred eighteen thousand, six hundred eleven".