87015705 has 16 divisors (see below), whose sum is σ = 159114624. Its totient is φ = 39778560.

The previous prime is 87015679. The next prime is 87015727. The reversal of 87015705 is 50751078.

It is not a de Polignac number, because 87015705 - 2⁸ = 87015449 is a prime.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 414256 + ... + 414465.

It is an arithmetic number, because the mean of its divisors is an integer number (9944664).

Almost surely, 2^87015705 is an apocalyptic number.

It is an amenable number.

87015705 is a deficient number, since it is larger than the sum of its proper divisors (72098919).

87015705 is a wasteful number, since it uses less digits than its factorization.

87015705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828736.

The product of its (nonzero) digits is 9800, while the sum is 33.

The square root of 87015705 is about 9328.2208914669. The cubic root of 87015705 is about 443.1314232483.

The spelling of 87015705 in words is "eighty-seven million, fifteen thousand, seven hundred five".