87871147 has 32 divisors (see below), whose sum is σ = 116121600. Its totient is φ = 64516608.

The previous prime is 87871139. The next prime is 87871151. The reversal of 87871147 is 74117878.

It is a happy number.

It is not a de Polignac number, because 87871147 - 2³ = 87871139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87871117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121854 + ... + 122572.

It is an arithmetic number, because the mean of its divisors is an integer number (3628800).

Almost surely, 2^87871147 is an apocalyptic number.

87871147 is a deficient number, since it is larger than the sum of its proper divisors (28250453).

87871147 is a wasteful number, since it uses less digits than its factorization.

87871147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835.

The product of its digits is 87808, while the sum is 43.

The square root of 87871147 is about 9373.9611157717. The cubic root of 87871147 is about 444.5788162292.

The spelling of 87871147 in words is "eighty-seven million, eight hundred seventy-one thousand, one hundred forty-seven".