87584217 has 24 divisors (see below), whose sum is σ = 139525056. Its totient is φ = 48692448.

The previous prime is 87584213. The next prime is 87584257. The reversal of 87584217 is 71248578.

It is not a de Polignac number, because 87584217 - 2² = 87584213 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87584213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2613 + ... + 13490.

It is an arithmetic number, because the mean of its divisors is an integer number (5813544).

Almost surely, 2^87584217 is an apocalyptic number.

It is an amenable number.

87584217 is a deficient number, since it is larger than the sum of its proper divisors (51940839).

87584217 is a wasteful number, since it uses less digits than its factorization.

87584217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16157 (or 16150 counting only the distinct ones).

The product of its digits is 125440, while the sum is 42.

The square root of 87584217 is about 9358.6439722857. The cubic root of 87584217 is about 444.0943868404.

The spelling of 87584217 in words is "eighty-seven million, five hundred eighty-four thousand, two hundred seventeen".