87634171 has 4 divisors (see below), whose sum is σ = 87813144. Its totient is φ = 87455200.

The previous prime is 87634123. The next prime is 87634193. The reversal of 87634171 is 17143678.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17143678 = 2 ⋅8571839.

It is a cyclic number.

It is not a de Polignac number, because 87634171 - 2²³ = 79245563 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87634171.

It is not an unprimeable number, because it can be changed into a prime (87634111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88750 + ... + 89731.

It is an arithmetic number, because the mean of its divisors is an integer number (21953286).

Almost surely, 2^87634171 is an apocalyptic number.

87634171 is a deficient number, since it is larger than the sum of its proper divisors (178973).

87634171 is a wasteful number, since it uses less digits than its factorization.

87634171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178972.

The product of its digits is 28224, while the sum is 37.

The square root of 87634171 is about 9361.3124614020. The cubic root of 87634171 is about 444.1788011161.

The spelling of 87634171 in words is "eighty-seven million, six hundred thirty-four thousand, one hundred seventy-one".