87133263 has 16 divisors (see below), whose sum is σ = 133670400. Its totient is φ = 49454496.

The previous prime is 87133247. The next prime is 87133289. The reversal of 87133263 is 36233178.

It is not a de Polignac number, because 87133263 - 2⁴ = 87133247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87133213) 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, 10795 + ... + 17052.

It is an arithmetic number, because the mean of its divisors is an integer number (8354400).

Almost surely, 2^87133263 is an apocalyptic number.

87133263 is a deficient number, since it is larger than the sum of its proper divisors (46537137).

87133263 is a wasteful number, since it uses less digits than its factorization.

87133263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28006.

The product of its digits is 18144, while the sum is 33.

The square root of 87133263 is about 9334.5199662329. The cubic root of 87133263 is about 443.3308899307.

The spelling of 87133263 in words is "eighty-seven million, one hundred thirty-three thousand, two hundred sixty-three".