64221323 has 8 divisors (see below), whose sum is σ = 65458800. Its totient is φ = 62988928.

The previous prime is 64221299. The next prime is 64221343. The reversal of 64221323 is 32312246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64221323 - 2⁶ = 64221259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64221343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32615 + ... + 34527.

It is an arithmetic number, because the mean of its divisors is an integer number (8182350).

Almost surely, 2^64221323 is an apocalyptic number.

64221323 is a deficient number, since it is larger than the sum of its proper divisors (1237477).

64221323 is a wasteful number, since it uses less digits than its factorization.

64221323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2541.

The product of its digits is 1728, while the sum is 23.

The square root of 64221323 is about 8013.8207491808. The cubic root of 64221323 is about 400.4605590931.

Adding to 64221323 its reverse (32312246), we get a palindrome (96533569).

The spelling of 64221323 in words is "sixty-four million, two hundred twenty-one thousand, three hundred twenty-three".