216880587 has 48 divisors (see below), whose sum is σ = 393719040. Its totient is φ = 111758400.

The previous prime is 216880579. The next prime is 216880613. The reversal of 216880587 is 785088612.

216880587 is a `hidden beast` number, since 2 + 1 + 68 + 8 + 0 + 587 = 666.

It is not a de Polignac number, because 216880587 - 2³ = 216880579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216880507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 89589 + ... + 91977.

It is an arithmetic number, because the mean of its divisors is an integer number (8202480).

Almost surely, 2^216880587 is an apocalyptic number.

216880587 is a deficient number, since it is larger than the sum of its proper divisors (176838453).

216880587 is a wasteful number, since it uses less digits than its factorization.

216880587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2544 (or 2541 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 45.

The square root of 216880587 is about 14726.8661635801. The cubic root of 216880587 is about 600.8142528207.

The spelling of 216880587 in words is "two hundred sixteen million, eight hundred eighty thousand, five hundred eighty-seven".