87166456 has 16 divisors (see below), whose sum is σ = 176009400. Its totient is φ = 40230624.

The previous prime is 87166447. The next prime is 87166459. The reversal of 87166456 is 65466178.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87166459) 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, 418966 + ... + 419173.

Almost surely, 2^87166456 is an apocalyptic number.

It is an amenable number.

87166456 is an abundant number, since it is smaller than the sum of its proper divisors (88842944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87166456 is a wasteful number, since it uses less digits than its factorization.

87166456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838158 (or 838154 counting only the distinct ones).

The product of its digits is 241920, while the sum is 43.

The square root of 87166456 is about 9336.2977673166. The cubic root of 87166456 is about 443.3871777115.

The spelling of 87166456 in words is "eighty-seven million, one hundred sixty-six thousand, four hundred fifty-six".