64818218 has 8 divisors (see below), whose sum is σ = 97278948. Its totient is φ = 32391904.

The previous prime is 64818203. The next prime is 64818223. The reversal of 64818218 is 81281846.

64818218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 64754209 + 64009 = 8047^2 + 253^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 3221 + ... + 11832.

Almost surely, 2^64818218 is an apocalyptic number.

64818218 is a deficient number, since it is larger than the sum of its proper divisors (32460730).

64818218 is a wasteful number, since it uses less digits than its factorization.

64818218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17208.

The product of its digits is 24576, while the sum is 38.

The square root of 64818218 is about 8050.9762140998. The cubic root of 64818218 is about 401.6974076627.

The spelling of 64818218 in words is "sixty-four million, eight hundred eighteen thousand, two hundred eighteen".