84684544 has 108 divisors (see below), whose sum is σ = 202490904. Its totient is φ = 35223552.

The previous prime is 84684541. The next prime is 84684569. The reversal of 84684544 is 44548648.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a self number, because there is not a number n which added to its sum of digits gives 84684544.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84684541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 539314 + ... + 539470.

Almost surely, 2^84684544 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 84684544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101245452).

84684544 is an abundant number, since it is smaller than the sum of its proper divisors (117806360).

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

84684544 is a wasteful number, since it uses less digits than its factorization.

84684544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230 (or 209 counting only the distinct ones).

The product of its digits is 491520, while the sum is 43.

The square root of 84684544 is about 9202.4205511376. The cubic root of 84684544 is about 439.1383689066.

The spelling of 84684544 in words is "eighty-four million, six hundred eighty-four thousand, five hundred forty-four".