84725218 has 16 divisors (see below), whose sum is σ = 135973440. Its totient is φ = 39474000.

The previous prime is 84725213. The next prime is 84725219. The reversal of 84725218 is 81252748.

It is not an unprimeable number, because it can be changed into a prime (84725213) by changing a digit.

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, 15958 + ... + 20593.

It is an arithmetic number, because the mean of its divisors is an integer number (8498340).

Almost surely, 2^84725218 is an apocalyptic number.

84725218 is a deficient number, since it is larger than the sum of its proper divisors (51248222).

84725218 is a wasteful number, since it uses less digits than its factorization.

84725218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36633.

The product of its digits is 35840, while the sum is 37.

The square root of 84725218 is about 9204.6302478698. The cubic root of 84725218 is about 439.2086637298.

The spelling of 84725218 in words is "eighty-four million, seven hundred twenty-five thousand, two hundred eighteen".