85665827 has 8 divisors (see below), whose sum is σ = 92354976. Its totient is φ = 78990912.

The previous prime is 85665799. The next prime is 85665857. The reversal of 85665827 is 72856658.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85665827 - 2⁸ = 85665571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85665857) by changing a digit.

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, 11258 + ... + 17264.

It is an arithmetic number, because the mean of its divisors is an integer number (11544372).

Almost surely, 2^85665827 is an apocalyptic number.

85665827 is a deficient number, since it is larger than the sum of its proper divisors (6689149).

85665827 is a wasteful number, since it uses less digits than its factorization.

85665827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7117.

The product of its digits is 806400, while the sum is 47.

The square root of 85665827 is about 9255.5835580475. The cubic root of 85665827 is about 440.8280326961.

The spelling of 85665827 in words is "eighty-five million, six hundred sixty-five thousand, eight hundred twenty-seven".