85812784 has 20 divisors (see below), whose sum is σ = 166408000. Its totient is φ = 42868800.

The previous prime is 85812767. The next prime is 85812799. The reversal of 85812784 is 48721858.

It is a self number, because there is not a number n which added to its sum of digits gives 85812784.

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, 29842 + ... + 32590.

It is an arithmetic number, because the mean of its divisors is an integer number (8320400).

Almost surely, 2^85812784 is an apocalyptic number.

It is an amenable number.

85812784 is a deficient number, since it is larger than the sum of its proper divisors (80595216).

85812784 is a wasteful number, since it uses less digits than its factorization.

85812784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4708 (or 4702 counting only the distinct ones).

The product of its digits is 143360, while the sum is 43.

The square root of 85812784 is about 9263.5189857850. The cubic root of 85812784 is about 441.0799641779.

The spelling of 85812784 in words is "eighty-five million, eight hundred twelve thousand, seven hundred eighty-four".