85820185 has 16 divisors (see below), whose sum is σ = 113933952. Its totient is φ = 61532800.

The previous prime is 85820179. The next prime is 85820201. The reversal of 85820185 is 58102858.

It is not a de Polignac number, because 85820185 - 2⁹ = 85819673 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7084 + ... + 14893.

It is an arithmetic number, because the mean of its divisors is an integer number (7120872).

Almost surely, 2^85820185 is an apocalyptic number.

It is an amenable number.

85820185 is a deficient number, since it is larger than the sum of its proper divisors (28113767).

85820185 is a wasteful number, since it uses less digits than its factorization.

85820185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22064.

The product of its (nonzero) digits is 25600, while the sum is 37.

The square root of 85820185 is about 9263.9184473958. The cubic root of 85820185 is about 441.0926442582.

The spelling of 85820185 in words is "eighty-five million, eight hundred twenty thousand, one hundred eighty-five".