87015717 has 12 divisors (see below), whose sum is σ = 126865440. Its totient is φ = 57467688.

The previous prime is 87015679. The next prime is 87015727. The reversal of 87015717 is 71751078.

87015717 is a `hidden beast` number, since 87 + 0 + 1 + 571 + 7 = 666.

It is not a de Polignac number, because 87015717 - 2¹⁵ = 86982949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87015727) 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 11 ways as a sum of consecutive naturals, for example, 44217 + ... + 46142.

It is an arithmetic number, because the mean of its divisors is an integer number (10572120).

Almost surely, 2^87015717 is an apocalyptic number.

It is an amenable number.

87015717 is a deficient number, since it is larger than the sum of its proper divisors (39849723).

87015717 is a wasteful number, since it uses less digits than its factorization.

87015717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90472 (or 90469 counting only the distinct ones).

The product of its (nonzero) digits is 13720, while the sum is 36.

The square root of 87015717 is about 9328.2215346764. The cubic root of 87015717 is about 443.1314436184.

The spelling of 87015717 in words is "eighty-seven million, fifteen thousand, seven hundred seventeen".