85728668 has 12 divisors (see below), whose sum is σ = 152485032. Its totient is φ = 42161520.

The previous prime is 85728661. The next prime is 85728673. The reversal of 85728668 is 86682758.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85728661) 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, 175430 + ... + 175917.

It is an arithmetic number, because the mean of its divisors is an integer number (12707086).

Almost surely, 2^85728668 is an apocalyptic number.

It is an amenable number.

85728668 is a deficient number, since it is larger than the sum of its proper divisors (66756364).

85728668 is a wasteful number, since it uses less digits than its factorization.

85728668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351412 (or 351410 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 50.

The square root of 85728668 is about 9258.9776973487. The cubic root of 85728668 is about 440.9357975791.

The spelling of 85728668 in words is "eighty-five million, seven hundred twenty-eight thousand, six hundred sixty-eight".