85643568 has 50 divisors (see below), whose sum is σ = 247881084. Its totient is φ = 28547424.

The previous prime is 85643539. The next prime is 85643611. The reversal of 85643568 is 86534658.

85643568 is a `hidden beast` number, since 85 + 6 + 4 + 3 + 568 = 666.

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 9 ways as a sum of consecutive naturals, for example, 31746 + ... + 34337.

Almost surely, 2^85643568 is an apocalyptic number.

It is an amenable number.

85643568 is an abundant number, since it is smaller than the sum of its proper divisors (162237516).

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

85643568 is a wasteful number, since it uses less digits than its factorization.

85643568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66103 (or 66088 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The square root of 85643568 is about 9254.3810165780. The cubic root of 85643568 is about 440.7898485041.

The spelling of 85643568 in words is "eighty-five million, six hundred forty-three thousand, five hundred sixty-eight".