65022020 has 72 divisors (see below), whose sum is σ = 162638784. Its totient is φ = 21760704.

The previous prime is 65022019. The next prime is 65022037. The reversal of 65022020 is 2022056.

It is a self number, because there is not a number n which added to its sum of digits gives 65022020.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41369 + ... + 42911.

It is an arithmetic number, because the mean of its divisors is an integer number (2258872).

Almost surely, 2^65022020 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 65022020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81319392).

65022020 is an abundant number, since it is smaller than the sum of its proper divisors (97616764).

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

65022020 is a wasteful number, since it uses less digits than its factorization.

65022020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1609 (or 1600 counting only the distinct ones).

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

The square root of 65022020 is about 8063.6232550882. The cubic root of 65022020 is about 402.1179740052.

Adding to 65022020 its reverse (2022056), we get a palindrome (67044076).

The spelling of 65022020 in words is "sixty-five million, twenty-two thousand, twenty".