87688173 has 8 divisors (see below), whose sum is σ = 123071200. Its totient is φ = 55381968.

The previous prime is 87688147. The next prime is 87688201. The reversal of 87688173 is 37188678.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87688173 - 2⁶ = 87688109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87688273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 769138 + ... + 769251.

It is an arithmetic number, because the mean of its divisors is an integer number (15383900).

Almost surely, 2^87688173 is an apocalyptic number.

It is an amenable number.

87688173 is a deficient number, since it is larger than the sum of its proper divisors (35383027).

87688173 is a wasteful number, since it uses less digits than its factorization.

87688173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1538411.

The product of its digits is 451584, while the sum is 48.

The square root of 87688173 is about 9364.1963349772. The cubic root of 87688173 is about 444.2700197888.

The spelling of 87688173 in words is "eighty-seven million, six hundred eighty-eight thousand, one hundred seventy-three".