85166618 has 16 divisors (see below), whose sum is σ = 131708160. Its totient is φ = 41283936.

The previous prime is 85166597. The next prime is 85166659. The reversal of 85166618 is 81666158.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3671 + ... + 13557.

It is an arithmetic number, because the mean of its divisors is an integer number (8231760).

Almost surely, 2^85166618 is an apocalyptic number.

85166618 is a deficient number, since it is larger than the sum of its proper divisors (46541542).

85166618 is a wasteful number, since it uses less digits than its factorization.

85166618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10021.

The product of its digits is 69120, while the sum is 41.

The square root of 85166618 is about 9228.5761632009. The cubic root of 85166618 is about 439.9700702782.

The spelling of 85166618 in words is "eighty-five million, one hundred sixty-six thousand, six hundred eighteen".