84505885 has 8 divisors (see below), whose sum is σ = 101461176. Its totient is φ = 67568640.

The previous prime is 84505867. The next prime is 84505919. The reversal of 84505885 is 58850548.

It can be written as a sum of positive squares in 4 ways, for example, as 5846724 + 78659161 = 2418^2 + 8869^2 .

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

It is not a de Polignac number, because 84505885 - 2¹⁵ = 84473117 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 10105 + ... + 16465.

It is an arithmetic number, because the mean of its divisors is an integer number (12682647).

Almost surely, 2^84505885 is an apocalyptic number.

It is an amenable number.

84505885 is a deficient number, since it is larger than the sum of its proper divisors (16955291).

84505885 is a wasteful number, since it uses less digits than its factorization.

84505885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9023.

The product of its (nonzero) digits is 256000, while the sum is 43.

The square root of 84505885 is about 9192.7082516525. The cubic root of 84505885 is about 438.8293347122.

The spelling of 84505885 in words is "eighty-four million, five hundred five thousand, eight hundred eighty-five".