87171567 has 8 divisors (see below), whose sum is σ = 132832896. Its totient is φ = 49812312.

The previous prime is 87171559. The next prime is 87171569. The reversal of 87171567 is 76517178.

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

It is not a de Polignac number, because 87171567 - 2³ = 87171559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87171569) 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, 2075493 + ... + 2075534.

It is an arithmetic number, because the mean of its divisors is an integer number (16604112).

Almost surely, 2^87171567 is an apocalyptic number.

87171567 is a deficient number, since it is larger than the sum of its proper divisors (45661329).

87171567 is a wasteful number, since it uses less digits than its factorization.

87171567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4151037.

The product of its digits is 82320, while the sum is 42.

The square root of 87171567 is about 9336.5714799384. The cubic root of 87171567 is about 443.3958435358.

The spelling of 87171567 in words is "eighty-seven million, one hundred seventy-one thousand, five hundred sixty-seven".