85804185 has 64 divisors (see below), whose sum is σ = 154586880. Its totient is φ = 40427520.

The previous prime is 85804157. The next prime is 85804189. The reversal of 85804185 is 58140858.

It is not a de Polignac number, because 85804185 - 2¹⁰ = 85803161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85804189) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 303054 + ... + 303336.

It is an arithmetic number, because the mean of its divisors is an integer number (2415420).

Almost surely, 2^85804185 is an apocalyptic number.

85804185 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

85804185 is a deficient number, since it is larger than the sum of its proper divisors (68782695).

85804185 is a wasteful number, since it uses less digits than its factorization.

85804185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378.

The product of its (nonzero) digits is 51200, while the sum is 39.

The square root of 85804185 is about 9263.0548416815. The cubic root of 85804185 is about 441.0652306572.

The spelling of 85804185 in words is "eighty-five million, eight hundred four thousand, one hundred eighty-five".