65223211 has 4 divisors (see below), whose sum is σ = 65471472. Its totient is φ = 64974952.

The previous prime is 65223199. The next prime is 65223281. The reversal of 65223211 is 11232256.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65223211 - 2¹³ = 65215019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65223281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123736 + ... + 124261.

It is an arithmetic number, because the mean of its divisors is an integer number (16367868).

Almost surely, 2^65223211 is an apocalyptic number.

65223211 is a deficient number, since it is larger than the sum of its proper divisors (248261).

65223211 is a wasteful number, since it uses less digits than its factorization.

65223211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248260.

The product of its digits is 720, while the sum is 22.

The square root of 65223211 is about 8076.0888429982. The cubic root of 65223211 is about 402.5322911737.

Adding to 65223211 its reverse (11232256), we get a palindrome (76455467).

The spelling of 65223211 in words is "sixty-five million, two hundred twenty-three thousand, two hundred eleven".