87015 has 8 divisors (see below), whose sum is σ = 139248. Its totient is φ = 46400.

The previous prime is 87013. The next prime is 87037. The reversal of 87015 is 51078.

It is a happy number.

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

It is not a de Polignac number, because 87015 - 2¹ = 87013 is a prime.

It is a super-2 number, since 2×87015² = 15143220450, which contains 22 as substring.

87015 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 86982 and 87000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2886 + ... + 2915.

It is an arithmetic number, because the mean of its divisors is an integer number (17406).

2⁸⁷⁰¹⁵ is an apocalyptic number.

87015 is a deficient number, since it is larger than the sum of its proper divisors (52233).

87015 is a wasteful number, since it uses less digits than its factorization.

87015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5809.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 87015 is about 294.9830503605. The cubic root of 87015 is about 44.3130226497.

Subtracting from 87015 its reverse (51078), we obtain a cube (35937 = 33³).

The spelling of 87015 in words is "eighty-seven thousand, fifteen".