85985672 has 8 divisors (see below), whose sum is σ = 161223150. Its totient is φ = 42992832.

The previous prime is 85985633. The next prime is 85985687. The reversal of 85985672 is 27658958.

It can be written as a sum of positive squares in only one way, i.e., 71132356 + 14853316 = 8434^2 + 3854^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 85985672.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5374097 + ... + 5374112.

Almost surely, 2^85985672 is an apocalyptic number.

It is an amenable number.

85985672 is a deficient number, since it is larger than the sum of its proper divisors (75237478).

85985672 is a wasteful number, since it uses less digits than its factorization.

85985672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10748215 (or 10748211 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 50.

The square root of 85985672 is about 9272.8459493297. The cubic root of 85985672 is about 441.3759817575.

The spelling of 85985672 in words is "eighty-five million, nine hundred eighty-five thousand, six hundred seventy-two".