84643056 has 100 divisors (see below), whose sum is σ = 246905824. Its totient is φ = 27993600.

The previous prime is 84643007. The next prime is 84643057. The reversal of 84643056 is 65034648.

84643056 is a `hidden beast` number, since 8 + 4 + 643 + 0 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 84643056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84643057) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 312201 + ... + 312471.

Almost surely, 2^84643056 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 84643056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123452912).

84643056 is an abundant number, since it is smaller than the sum of its proper divisors (162262768).

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

84643056 is a wasteful number, since it uses less digits than its factorization.

84643056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532 (or 517 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 84643056 is about 9200.1660854574. The cubic root of 84643056 is about 439.0666440958.

84643056 divided by its sum of digits (36) gives a triangular number (2351196 = T₂₁₆₈).

The spelling of 84643056 in words is "eighty-four million, six hundred forty-three thousand, fifty-six".