84784864 has 48 divisors (see below), whose sum is σ = 173895120. Its totient is φ = 40642560.

The previous prime is 84784853. The next prime is 84784879. The reversal of 84784864 is 46848748.

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, 195592 + ... + 196024.

It is an arithmetic number, because the mean of its divisors is an integer number (3622815).

Almost surely, 2^84784864 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 84784864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86947560).

84784864 is an abundant number, since it is smaller than the sum of its proper divisors (89110256).

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

84784864 is a wasteful number, since it uses less digits than its factorization.

84784864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683 (or 675 counting only the distinct ones).

The product of its digits is 1376256, while the sum is 49.

The square root of 84784864 is about 9207.8696776182. The cubic root of 84784864 is about 439.3117062299.

The spelling of 84784864 in words is "eighty-four million, seven hundred eighty-four thousand, eight hundred sixty-four".