987775559 has 8 divisors (see below), whose sum is σ = 993091200. Its totient is φ = 982473336.

The previous prime is 987775519. The next prime is 987775577. The reversal of 987775559 is 955577789.

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

It is a cyclic number.

It is not a de Polignac number, because 987775559 - 2¹⁶ = 987710023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987775519) 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 7 ways as a sum of consecutive naturals, for example, 166604 + ... + 172430.

It is an arithmetic number, because the mean of its divisors is an integer number (124136400).

Almost surely, 2^987775559 is an apocalyptic number.

987775559 is a deficient number, since it is larger than the sum of its proper divisors (5315641).

987775559 is a wasteful number, since it uses less digits than its factorization.

987775559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6709.

The product of its digits is 27783000, while the sum is 62.

The square root of 987775559 is about 31428.8968785098. The cubic root of 987775559 is about 995.9084685352.

The spelling of 987775559 in words is "nine hundred eighty-seven million, seven hundred seventy-five thousand, five hundred fifty-nine".