65220113 has 4 divisors (see below), whose sum is σ = 74537280. Its totient is φ = 55902948.

The previous prime is 65220059. The next prime is 65220137. The reversal of 65220113 is 31102256.

65220113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65220113 - 2¹⁶ = 65154577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65220173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4658573 + ... + 4658586.

It is an arithmetic number, because the mean of its divisors is an integer number (18634320).

Almost surely, 2^65220113 is an apocalyptic number.

It is an amenable number.

65220113 is a deficient number, since it is larger than the sum of its proper divisors (9317167).

65220113 is an equidigital number, since it uses as much as digits as its factorization.

65220113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9317166.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 65220113 is about 8075.8970399579. The cubic root of 65220113 is about 402.5259178558.

Adding to 65220113 its reverse (31102256), we get a palindrome (96322369).

The spelling of 65220113 in words is "sixty-five million, two hundred twenty thousand, one hundred thirteen".