87856133 has 16 divisors (see below), whose sum is σ = 94785600. Its totient is φ = 81181440.

The previous prime is 87856129. The next prime is 87856141. The reversal of 87856133 is 33165878.

It is a cyclic number.

It is not a de Polignac number, because 87856133 - 2² = 87856129 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 (87856123) 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 15 ways as a sum of consecutive naturals, for example, 202685 + ... + 203117.

It is an arithmetic number, because the mean of its divisors is an integer number (5924100).

Almost surely, 2^87856133 is an apocalyptic number.

It is an amenable number.

87856133 is a deficient number, since it is larger than the sum of its proper divisors (6929467).

87856133 is a wasteful number, since it uses less digits than its factorization.

87856133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692.

The product of its digits is 120960, while the sum is 41.

The square root of 87856133 is about 9373.1602461496. The cubic root of 87856133 is about 444.5534939751.

The spelling of 87856133 in words is "eighty-seven million, eight hundred fifty-six thousand, one hundred thirty-three".