87365289 has 16 divisors (see below), whose sum is σ = 127365120. Its totient is φ = 52828560.

The previous prime is 87365279. The next prime is 87365297. The reversal of 87365289 is 98256378.

It is not a de Polignac number, because 87365289 - 2¹⁵ = 87332521 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (87365209) 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 15 ways as a sum of consecutive naturals, for example, 13044 + ... + 18570.

It is an arithmetic number, because the mean of its divisors is an integer number (7960320).

Almost surely, 2^87365289 is an apocalyptic number.

It is an amenable number.

87365289 is a deficient number, since it is larger than the sum of its proper divisors (39999831).

87365289 is a wasteful number, since it uses less digits than its factorization.

87365289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6020.

The product of its digits is 725760, while the sum is 48.

The square root of 87365289 is about 9346.9400875367. The cubic root of 87365289 is about 443.7240544508.

The spelling of 87365289 in words is "eighty-seven million, three hundred sixty-five thousand, two hundred eighty-nine".