64618211 has 6 divisors (see below), whose sum is σ = 75168180. Its totient is φ = 55386996.

The previous prime is 64618189. The next prime is 64618223. The reversal of 64618211 is 11281646.

It is a de Polignac number, because none of the positive numbers 2^k-64618211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64618261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 659321 + ... + 659418.

It is an arithmetic number, because the mean of its divisors is an integer number (12528030).

Almost surely, 2^64618211 is an apocalyptic number.

64618211 is a deficient number, since it is larger than the sum of its proper divisors (10549969).

64618211 is a wasteful number, since it uses less digits than its factorization.

64618211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318753 (or 1318746 counting only the distinct ones).

The product of its digits is 2304, while the sum is 29.

The square root of 64618211 is about 8038.5453286027. The cubic root of 64618211 is about 401.2838147245.

Adding to 64618211 its reverse (11281646), we get a palindrome (75899857).

The spelling of 64618211 in words is "sixty-four million, six hundred eighteen thousand, two hundred eleven".