8726387887 has 32 divisors (see below), whose sum is σ = 10976670720. Its totient is φ = 6764186880.

The previous prime is 8726387881. The next prime is 8726387903. The reversal of 8726387887 is 7887836278.

It is a cyclic number.

It is not a de Polignac number, because 8726387887 - 2¹⁹ = 8725863599 is a prime.

It is a super-2 number, since 2×8726387887² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8726387881) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1652283 + ... + 1657555.

It is an arithmetic number, because the mean of its divisors is an integer number (343020960).

Almost surely, 2^8726387887 is an apocalyptic number.

8726387887 is a deficient number, since it is larger than the sum of its proper divisors (2250282833).

8726387887 is a wasteful number, since it uses less digits than its factorization.

8726387887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5863.

The product of its digits is 50577408, while the sum is 64.

The square root of 8726387887 is about 93415.1373547136. The cubic root of 8726387887 is about 2058.7874133533.

The spelling of 8726387887 in words is "eight billion, seven hundred twenty-six million, three hundred eighty-seven thousand, eight hundred eighty-seven".