65222912 has 18 divisors (see below), whose sum is σ = 130191558. Its totient is φ = 32611328.

The previous prime is 65222909. The next prime is 65222921. The reversal of 65222912 is 21922256.

It can be written as a sum of positive squares in only one way, i.e., 63744256 + 1478656 = 7984^2 + 1216^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127133 + ... + 127644.

Almost surely, 2^65222912 is an apocalyptic number.

It is an amenable number.

65222912 is a deficient number, since it is larger than the sum of its proper divisors (64968646).

65222912 is an equidigital number, since it uses as much as digits as its factorization.

65222912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254793 (or 254779 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 65222912 is about 8076.0703315412. The cubic root of 65222912 is about 402.5316760689.

The spelling of 65222912 in words is "sixty-five million, two hundred twenty-two thousand, nine hundred twelve".