87135666 has 16 divisors (see below), whose sum is σ = 178981824. Its totient is φ = 28260144.

The previous prime is 87135599. The next prime is 87135677. The reversal of 87135666 is 66653178.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 196030 + ... + 196473.

It is an arithmetic number, because the mean of its divisors is an integer number (11186364).

Almost surely, 2^87135666 is an apocalyptic number.

87135666 is an abundant number, since it is smaller than the sum of its proper divisors (91846158).

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

87135666 is a wasteful number, since it uses less digits than its factorization.

87135666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392545.

The product of its digits is 181440, while the sum is 42.

The square root of 87135666 is about 9334.6486811235. The cubic root of 87135666 is about 443.3349653522.

The spelling of 87135666 in words is "eighty-seven million, one hundred thirty-five thousand, six hundred sixty-six".