85208805 has 36 divisors (see below), whose sum is σ = 162353100. Its totient is φ = 41310720.

The previous prime is 85208723. The next prime is 85208821. The reversal of 85208805 is 50880258.

It can be written as a sum of positive squares in 2 ways, for example, as 21958596 + 63250209 = 4686^2 + 7953^2 .

It is not a de Polignac number, because 85208805 - 2¹⁹ = 84684517 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85208805.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2380 + ... + 13269.

Almost surely, 2^85208805 is an apocalyptic number.

It is an amenable number.

85208805 is a deficient number, since it is larger than the sum of its proper divisors (77144295).

85208805 is a wasteful number, since it uses less digits than its factorization.

85208805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15682 (or 15668 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 36.

The square root of 85208805 is about 9230.8615524229. The cubic root of 85208805 is about 440.0427041885.

The spelling of 85208805 in words is "eighty-five million, two hundred eight thousand, eight hundred five".