87266633 has 4 divisors (see below), whose sum is σ = 87647940. Its totient is φ = 86885328.

The previous prime is 87266611. The next prime is 87266659. The reversal of 87266633 is 33666278.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32684089 + 54582544 = 5717^2 + 7388^2 .

It is a cyclic number.

It is not a de Polignac number, because 87266633 - 2¹⁰ = 87265609 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (87266603) 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 3 ways as a sum of consecutive naturals, for example, 190310 + ... + 190767.

It is an arithmetic number, because the mean of its divisors is an integer number (21911985).

Almost surely, 2^87266633 is an apocalyptic number.

It is an amenable number.

87266633 is a deficient number, since it is larger than the sum of its proper divisors (381307).

87266633 is a wasteful number, since it uses less digits than its factorization.

87266633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381306.

The product of its digits is 217728, while the sum is 41.

The square root of 87266633 is about 9341.6611477831. The cubic root of 87266633 is about 443.5569685330.

The spelling of 87266633 in words is "eighty-seven million, two hundred sixty-six thousand, six hundred thirty-three".