87776871 has 32 divisors (see below), whose sum is σ = 147130368. Its totient is φ = 45308160.

The previous prime is 87776869. The next prime is 87776893. The reversal of 87776871 is 17867778.

It is not a de Polignac number, because 87776871 - 2¹ = 87776869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87776071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9411 + ... + 16251.

It is an arithmetic number, because the mean of its divisors is an integer number (4597824).

Almost surely, 2^87776871 is an apocalyptic number.

87776871 is a deficient number, since it is larger than the sum of its proper divisors (59353497).

87776871 is a wasteful number, since it uses less digits than its factorization.

87776871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6911.

The product of its digits is 921984, while the sum is 51.

The square root of 87776871 is about 9368.9311556869. The cubic root of 87776871 is about 444.4197647384.

The spelling of 87776871 in words is "eighty-seven million, seven hundred seventy-six thousand, eight hundred seventy-one".