65043620 has 24 divisors (see below), whose sum is σ = 136987200. Its totient is φ = 25942112.

The previous prime is 65043619. The next prime is 65043637. The reversal of 65043620 is 2634056.

65043620 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 65043620.

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, 2651 + ... + 11709.

It is an arithmetic number, because the mean of its divisors is an integer number (5707800).

Almost surely, 2^65043620 is an apocalyptic number.

It is an amenable number.

65043620 is an abundant number, since it is smaller than the sum of its proper divisors (71943580).

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

65043620 is a wasteful number, since it uses less digits than its factorization.

65043620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9427 (or 9425 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 65043620 is about 8064.9624921632. The cubic root of 65043620 is about 402.1624962897.

Adding to 65043620 its reverse (2634056), we get a palindrome (67677676).

The spelling of 65043620 in words is "sixty-five million, forty-three thousand, six hundred twenty".