87085773 has 10 divisors (see below), whose sum is σ = 130091214. Its totient is φ = 58057128.

The previous prime is 87085771. The next prime is 87085807. The reversal of 87085773 is 37758078.

87085773 is a `hidden beast` number, since 8 + 70 + 8 + 577 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 83942244 + 3143529 = 9162^2 + 1773^2 .

It is not a de Polignac number, because 87085773 - 2¹ = 87085771 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87085771) 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 9 ways as a sum of consecutive naturals, for example, 537486 + ... + 537647.

Almost surely, 2^87085773 is an apocalyptic number.

It is an amenable number.

87085773 is a deficient number, since it is larger than the sum of its proper divisors (43005441).

87085773 is a wasteful number, since it uses less digits than its factorization.

87085773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075145 (or 1075136 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 45.

The square root of 87085773 is about 9331.9758358024. The cubic root of 87085773 is about 443.2503328263.

The spelling of 87085773 in words is "eighty-seven million, eighty-five thousand, seven hundred seventy-three".