65002220 has 48 divisors (see below), whose sum is σ = 148091328. Its totient is φ = 23869440.

The previous prime is 65002213. The next prime is 65002241. The reversal of 65002220 is 2220056.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 11609 + ... + 16271.

It is an arithmetic number, because the mean of its divisors is an integer number (3085236).

Almost surely, 2^65002220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65002220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74045664).

65002220 is an abundant number, since it is smaller than the sum of its proper divisors (83089108).

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

65002220 is a wasteful number, since it uses less digits than its factorization.

65002220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4730 (or 4728 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 65002220 is about 8062.3954256784. The cubic root of 65002220 is about 402.0771532484.

Adding to 65002220 its reverse (2220056), we get a palindrome (67222276).

The spelling of 65002220 in words is "sixty-five million, two thousand, two hundred twenty".