64218441 has 16 divisors (see below), whose sum is σ = 101232000. Its totient is φ = 35430528.

The previous prime is 64218433. The next prime is 64218463. The reversal of 64218441 is 14481246.

It is not a de Polignac number, because 64218441 - 2³ = 64218433 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 64218399 and 64218408.

It is not an unprimeable number, because it can be changed into a prime (64218431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52116 + ... + 53333.

It is an arithmetic number, because the mean of its divisors is an integer number (6327000).

Almost surely, 2^64218441 is an apocalyptic number.

It is an amenable number.

64218441 is a deficient number, since it is larger than the sum of its proper divisors (37013559).

64218441 is a wasteful number, since it uses less digits than its factorization.

64218441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105488.

The product of its digits is 6144, while the sum is 30.

The square root of 64218441 is about 8013.6409328095. The cubic root of 64218441 is about 400.4545686394.

Adding to 64218441 its reverse (14481246), we get a palindrome (78699687).

The spelling of 64218441 in words is "sixty-four million, two hundred eighteen thousand, four hundred forty-one".