65280222 has 64 divisors (see below), whose sum is σ = 166594560. Its totient is φ = 18561312.

The previous prime is 65280211. The next prime is 65280223. The reversal of 65280222 is 22208256.

65280222 is a `hidden beast` number, since 652 + 8 + 0 + 2 + 2 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65280223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 140763 + ... + 141225.

It is an arithmetic number, because the mean of its divisors is an integer number (2603040).

Almost surely, 2^65280222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65280222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83297280).

65280222 is an abundant number, since it is smaller than the sum of its proper divisors (101314338).

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

65280222 is a wasteful number, since it uses less digits than its factorization.

65280222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854 (or 848 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 65280222 is about 8079.6176889751. The cubic root of 65280222 is about 402.6495402578.

Adding to 65280222 its reverse (22208256), we get a palindrome (87488478).

The spelling of 65280222 in words is "sixty-five million, two hundred eighty thousand, two hundred twenty-two".