85356666 has 24 divisors (see below), whose sum is σ = 191790144.
Its totient is φ = 28452060.
The previous prime is 85356647. The next prime is 85356679. The reversal of 85356666 is 66665358.
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 11 ways as a sum of consecutive naturals, for example, 87330 + ... + 88301.
It is an arithmetic number, because the mean of its divisors is an integer number (7991256).
Almost surely, 285356666 is an apocalyptic number.
85356666 is an abundant number, since it is smaller than the sum of its proper divisors (106433478).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
85356666 is a wasteful number, since it uses less digits than its factorization.
85356666 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 175648 (or 175636 counting only the distinct ones).
The product of its digits is 777600, while the sum is 45.
The square root of 85356666 is about 9238.8671383455.
The cubic root of 85356666 is about 440.2970893042.
The spelling of 85356666 in words is "eighty-five million, three hundred fifty-six thousand, six hundred sixty-six".