87886887 has 16 divisors (see below), whose sum is σ = 133394688. Its totient is φ = 50948480.

The previous prime is 87886871. The next prime is 87886919. The reversal of 87886887 is 78868878.

It is not a de Polignac number, because 87886887 - 2⁴ = 87886871 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87886887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87886807) 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 15 ways as a sum of consecutive naturals, for example, 57138 + ... + 58655.

It is an arithmetic number, because the mean of its divisors is an integer number (8337168).

Almost surely, 2^87886887 is an apocalyptic number.

87886887 is a deficient number, since it is larger than the sum of its proper divisors (45507801).

87886887 is a wasteful number, since it uses less digits than its factorization.

87886887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115830.

The product of its digits is 9633792, while the sum is 60.

The square root of 87886887 is about 9374.8006378803. The cubic root of 87886887 is about 444.6053598408.

Subtracting from 87886887 its reverse (78868878), we obtain a square (9018009 = 3003²).

The spelling of 87886887 in words is "eighty-seven million, eight hundred eighty-six thousand, eight hundred eighty-seven".