85785818 has 8 divisors (see below), whose sum is σ = 129531360. Its totient is φ = 42608700.

The previous prime is 85785811. The next prime is 85785827. The reversal of 85785818 is 81858758.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (85785811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141728 + ... + 142331.

It is an arithmetic number, because the mean of its divisors is an integer number (16191420).

Almost surely, 2^85785818 is an apocalyptic number.

85785818 is a deficient number, since it is larger than the sum of its proper divisors (43745542).

85785818 is a wasteful number, since it uses less digits than its factorization.

85785818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284212.

The product of its digits is 716800, while the sum is 50.

The square root of 85785818 is about 9262.0633770235. The cubic root of 85785818 is about 441.0337573547.

The spelling of 85785818 in words is "eighty-five million, seven hundred eighty-five thousand, eight hundred eighteen".