87175387 has 4 divisors (see below), whose sum is σ = 93881200. Its totient is φ = 80469576.

The previous prime is 87175373. The next prime is 87175399. The reversal of 87175387 is 78357178.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87175387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87175687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3352887 + ... + 3352912.

It is an arithmetic number, because the mean of its divisors is an integer number (23470300).

Almost surely, 2^87175387 is an apocalyptic number.

87175387 is a deficient number, since it is larger than the sum of its proper divisors (6705813).

87175387 is a wasteful number, since it uses less digits than its factorization.

87175387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6705812.

The product of its digits is 329280, while the sum is 46.

The square root of 87175387 is about 9336.7760495794. The cubic root of 87175387 is about 443.4023202171.

The spelling of 87175387 in words is "eighty-seven million, one hundred seventy-five thousand, three hundred eighty-seven".