64221223 has 16 divisors (see below), whose sum is σ = 75769344. Its totient is φ = 53772160.

The previous prime is 64221217. The next prime is 64221229. The reversal of 64221223 is 32212246.

It is an interprime number because it is at equal distance from previous prime (64221217) and next prime (64221229).

It is a cyclic number.

It is not a de Polignac number, because 64221223 - 2⁵ = 64221191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64221194 and 64221203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64221229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5136 + ... + 12442.

It is an arithmetic number, because the mean of its divisors is an integer number (4735584).

Almost surely, 2^64221223 is an apocalyptic number.

64221223 is a deficient number, since it is larger than the sum of its proper divisors (11548121).

64221223 is a wasteful number, since it uses less digits than its factorization.

64221223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7382.

The product of its digits is 1152, while the sum is 22.

The square root of 64221223 is about 8013.8145099572. The cubic root of 64221223 is about 400.4603512386.

Adding to 64221223 its reverse (32212246), we get a palindrome (96433469).

The spelling of 64221223 in words is "sixty-four million, two hundred twenty-one thousand, two hundred twenty-three".