87885065 has 24 divisors (see below), whose sum is σ = 110231880. Its totient is φ = 67246848.

The previous prime is 87885041. The next prime is 87885067. The reversal of 87885065 is 56058878.

It can be written as a sum of positive squares in 4 ways, for example, as 17106496 + 70778569 = 4136^2 + 8413^2 .

It is not a de Polignac number, because 87885065 - 2¹⁴ = 87868681 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is not an unprimeable number, because it can be changed into a prime (87885067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 806231 + ... + 806339.

It is an arithmetic number, because the mean of its divisors is an integer number (4592995).

Almost surely, 2^87885065 is an apocalyptic number.

It is an amenable number.

87885065 is a deficient number, since it is larger than the sum of its proper divisors (22346815).

87885065 is a wasteful number, since it uses less digits than its factorization.

87885065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 47.

The square root of 87885065 is about 9374.7034619768. The cubic root of 87885065 is about 444.6022874197.

The spelling of 87885065 in words is "eighty-seven million, eight hundred eighty-five thousand, sixty-five".