87811369 has 16 divisors (see below), whose sum is σ = 95385600. Its totient is φ = 80571024.

The previous prime is 87811343. The next prime is 87811387. The reversal of 87811369 is 96311878.

It is a cyclic number.

It is not a de Polignac number, because 87811369 - 2⁹ = 87810857 is a prime.

It is a super-2 number, since 2×87811369² = 15421673051308322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87811169) 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, 95092 + ... + 96010.

It is an arithmetic number, because the mean of its divisors is an integer number (5961600).

Almost surely, 2^87811369 is an apocalyptic number.

It is an amenable number.

87811369 is a deficient number, since it is larger than the sum of its proper divisors (7574231).

87811369 is a wasteful number, since it uses less digits than its factorization.

87811369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092.

The product of its digits is 72576, while the sum is 43.

The square root of 87811369 is about 9370.7720599746. The cubic root of 87811369 is about 444.4779789535.

The spelling of 87811369 in words is "eighty-seven million, eight hundred eleven thousand, three hundred sixty-nine".