87827971 has 24 divisors (see below), whose sum is σ = 111571040. Its totient is φ = 67668480.

The previous prime is 87827969. The next prime is 87827981. The reversal of 87827971 is 17972878.

It is not a de Polignac number, because 87827971 - 2¹ = 87827969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87827941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81625 + ... + 82693.

Almost surely, 2^87827971 is an apocalyptic number.

87827971 is a deficient number, since it is larger than the sum of its proper divisors (23743069).

87827971 is a wasteful number, since it uses less digits than its factorization.

87827971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195 (or 1184 counting only the distinct ones).

The product of its digits is 395136, while the sum is 49.

The square root of 87827971 is about 9371.6578576045. The cubic root of 87827971 is about 444.5059888361.

The spelling of 87827971 in words is "eighty-seven million, eight hundred twenty-seven thousand, nine hundred seventy-one".