64984218 has 48 divisors (see below), whose sum is σ = 148186080. Its totient is φ = 18937152.

The previous prime is 64984211. The next prime is 64984243. The reversal of 64984218 is 81248946.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 64984218.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64984211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17580 + ... + 20952.

It is an arithmetic number, because the mean of its divisors is an integer number (3087210).

Almost surely, 2^64984218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64984218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74093040).

64984218 is an abundant number, since it is smaller than the sum of its proper divisors (83201862).

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

64984218 is a wasteful number, since it uses less digits than its factorization.

64984218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3423 (or 3410 counting only the distinct ones).

The product of its digits is 110592, while the sum is 42.

The square root of 64984218 is about 8061.2789307901. The cubic root of 64984218 is about 402.0400321511.

The spelling of 64984218 in words is "sixty-four million, nine hundred eighty-four thousand, two hundred eighteen".