84505856 has 36 divisors (see below), whose sum is σ = 170622900. Its totient is φ = 41766912.

The previous prime is 84505831. The next prime is 84505867. The reversal of 84505856 is 65850548.

It can be written as a sum of positive squares in 2 ways, for example, as 19219456 + 65286400 = 4384^2 + 8080^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20930 + ... + 24638.

It is an arithmetic number, because the mean of its divisors is an integer number (4739525).

Almost surely, 2^84505856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84505856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85311450).

84505856 is an abundant number, since it is smaller than the sum of its proper divisors (86117044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84505856 is an equidigital number, since it uses as much as digits as its factorization.

84505856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3814 (or 3800 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 41.

The square root of 84505856 is about 9192.7066743152. The cubic root of 84505856 is about 438.8292845143.

The spelling of 84505856 in words is "eighty-four million, five hundred five thousand, eight hundred fifty-six".