85185850 has 12 divisors (see below), whose sum is σ = 158445774. Its totient is φ = 34074320.

The previous prime is 85185791. The next prime is 85185851. The reversal of 85185850 is 5858158.

It can be written as a sum of positive squares in 3 ways, for example, as 66961489 + 18224361 = 8183^2 + 4269^2 .

It is not an unprimeable number, because it can be changed into a prime (85185851) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 851809 + ... + 851908.

Almost surely, 2^85185850 is an apocalyptic number.

85185850 is a deficient number, since it is larger than the sum of its proper divisors (73259924).

85185850 is a wasteful number, since it uses less digits than its factorization.

85185850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1703729 (or 1703724 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 40.

The square root of 85185850 is about 9229.6180852731. The cubic root of 85185850 is about 440.0031852386.

The spelling of 85185850 in words is "eighty-five million, one hundred eighty-five thousand, eight hundred fifty".