85872812 has 12 divisors (see below), whose sum is σ = 150769080. Its totient is φ = 42795936.

The previous prime is 85872803. The next prime is 85872827. The reversal of 85872812 is 21827858.

It is a self number, because there is not a number n which added to its sum of digits gives 85872812.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33737 + ... + 36192.

It is an arithmetic number, because the mean of its divisors is an integer number (12564090).

Almost surely, 2^85872812 is an apocalyptic number.

It is an amenable number.

85872812 is a deficient number, since it is larger than the sum of its proper divisors (64896268).

85872812 is a wasteful number, since it uses less digits than its factorization.

85872812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70240 (or 70238 counting only the distinct ones).

The product of its digits is 71680, while the sum is 41.

The square root of 85872812 is about 9266.7584407926. The cubic root of 85872812 is about 441.1827887046.

The spelling of 85872812 in words is "eighty-five million, eight hundred seventy-two thousand, eight hundred twelve".