65221244 has 12 divisors (see below), whose sum is σ = 124513368. Its totient is φ = 29646000.

The previous prime is 65221213. The next prime is 65221253. The reversal of 65221244 is 44212256.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 741107 + ... + 741194.

It is an arithmetic number, because the mean of its divisors is an integer number (10376114).

Almost surely, 2^65221244 is an apocalyptic number.

It is an amenable number.

65221244 is a deficient number, since it is larger than the sum of its proper divisors (59292124).

65221244 is a wasteful number, since it uses less digits than its factorization.

65221244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482316 (or 1482314 counting only the distinct ones).

The product of its digits is 3840, while the sum is 26.

The square root of 65221244 is about 8075.9670628353. The cubic root of 65221244 is about 402.5282446134.

It can be divided in two parts, 652212 and 44, that added together give a palindrome (652256).

The spelling of 65221244 in words is "sixty-five million, two hundred twenty-one thousand, two hundred forty-four".