65416220 has 24 divisors (see below), whose sum is σ = 138290208. Its totient is φ = 25992000.

The previous prime is 65416213. The next prime is 65416283. The reversal of 65416220 is 2261456.

65416220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 65416220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7811 + ... + 13850.

It is an arithmetic number, because the mean of its divisors is an integer number (5762092).

Almost surely, 2^65416220 is an apocalyptic number.

It is an amenable number.

65416220 is an abundant number, since it is smaller than the sum of its proper divisors (72873988).

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

65416220 is a wasteful number, since it uses less digits than its factorization.

65416220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21821 (or 21819 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 65416220 is about 8088.0294262571. The cubic root of 65416220 is about 402.9289589837.

Adding to 65416220 its reverse (2261456), we get a palindrome (67677676).

The spelling of 65416220 in words is "sixty-five million, four hundred sixteen thousand, two hundred twenty".