84647772 has 72 divisors (see below), whose sum is σ = 237444480. Its totient is φ = 25209120.

The previous prime is 84647747. The next prime is 84647813. The reversal of 84647772 is 27774648.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21553 + ... + 25175.

It is an arithmetic number, because the mean of its divisors is an integer number (3297840).

Almost surely, 2^84647772 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 84647772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118722240).

84647772 is an abundant number, since it is smaller than the sum of its proper divisors (152796708).

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

84647772 is a wasteful number, since it uses less digits than its factorization.

84647772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3703 (or 3698 counting only the distinct ones).

The product of its digits is 526848, while the sum is 45.

The square root of 84647772 is about 9200.4223816084. The cubic root of 84647772 is about 439.0747983376.

The spelling of 84647772 in words is "eighty-four million, six hundred forty-seven thousand, seven hundred seventy-two".