84155648 has 36 divisors (see below), whose sum is σ = 169764420. Its totient is φ = 41631744.

The previous prime is 84155633. The next prime is 84155671. The reversal of 84155648 is 84655148.

It can be written as a sum of positive squares in 2 ways, for example, as 64513024 + 19642624 = 8032^2 + 4432^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23138 + ... + 26526.

Almost surely, 2^84155648 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 84155648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84882210).

84155648 is an abundant number, since it is smaller than the sum of its proper divisors (85608772).

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

84155648 is an equidigital number, since it uses as much as digits as its factorization.

84155648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3502 (or 3488 counting only the distinct ones).

The product of its digits is 153600, while the sum is 41.

The square root of 84155648 is about 9173.6387546055. The cubic root of 84155648 is about 438.2222484325. Note that the first 4 decimals are identical.

Subtracting 84155648 from its reverse (84655148), we obtain a triangular number (499500 = T₉₉₉).

The spelling of 84155648 in words is "eighty-four million, one hundred fifty-five thousand, six hundred forty-eight".