65222013 has 16 divisors (see below), whose sum is σ = 94222656. Its totient is φ = 39970560.

The previous prime is 65222011. The next prime is 65222023. The reversal of 65222013 is 31022256.

It is not a de Polignac number, because 65222013 - 2¹ = 65222011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65222011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12678 + ... + 17063.

It is an arithmetic number, because the mean of its divisors is an integer number (5888916).

Almost surely, 2^65222013 is an apocalyptic number.

It is an amenable number.

65222013 is a deficient number, since it is larger than the sum of its proper divisors (29000643).

65222013 is a wasteful number, since it uses less digits than its factorization.

65222013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29804.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 65222013 is about 8076.0146730922. The cubic root of 65222013 is about 402.5298266286.

Adding to 65222013 its reverse (31022256), we get a palindrome (96244269).

The spelling of 65222013 in words is "sixty-five million, two hundred twenty-two thousand, thirteen".