87111365 has 8 divisors (see below), whose sum is σ = 114036768. Its totient is φ = 63353680.

The previous prime is 87111359. The next prime is 87111379. The reversal of 87111365 is 56311178.

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

It is not a de Polignac number, because 87111365 - 2¹⁸ = 86849221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 791867 + ... + 791976.

It is an arithmetic number, because the mean of its divisors is an integer number (14254596).

Almost surely, 2^87111365 is an apocalyptic number.

It is an amenable number.

87111365 is a deficient number, since it is larger than the sum of its proper divisors (26925403).

87111365 is a wasteful number, since it uses less digits than its factorization.

87111365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1583859.

The product of its digits is 5040, while the sum is 32.

The square root of 87111365 is about 9333.3469345139. The cubic root of 87111365 is about 443.2937480751.

It can be divided in two parts, 871113 and 65, that added together give a palindrome (871178).

The spelling of 87111365 in words is "eighty-seven million, one hundred eleven thousand, three hundred sixty-five".