87133365 has 48 divisors (see below), whose sum is σ = 166458240. Its totient is φ = 41811840.

The previous prime is 87133339. The next prime is 87133367. The reversal of 87133365 is 56333178.

It is not a de Polignac number, because 87133365 - 2⁹ = 87132853 is a prime.

Together with 79324875 it forms an amicable pair .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87133367) 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 47 ways as a sum of consecutive naturals, for example, 50131 + ... + 51839.

It is an arithmetic number, because the mean of its divisors is an integer number (3467880).

Almost surely, 2^87133365 is an apocalyptic number.

It is an amenable number.

87133365 is a deficient number, since it is larger than the sum of its proper divisors (79324875).

87133365 is a wasteful number, since it uses less digits than its factorization.

87133365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1834 (or 1831 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 87133365 is about 9334.5254298223. The cubic root of 87133365 is about 443.3310629214.

The spelling of 87133365 in words is "eighty-seven million, one hundred thirty-three thousand, three hundred sixty-five".