64338223 has 4 divisors (see below), whose sum is σ = 64358560. Its totient is φ = 64317888.

The previous prime is 64338221. The next prime is 64338247. The reversal of 64338223 is 32283346.

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 64338223 - 2¹ = 64338221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64338221) 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 3 ways as a sum of consecutive naturals, for example, 4290 + ... + 12127.

It is an arithmetic number, because the mean of its divisors is an integer number (16089640).

Almost surely, 2^64338223 is an apocalyptic number.

64338223 is a deficient number, since it is larger than the sum of its proper divisors (20337).

64338223 is a wasteful number, since it uses less digits than its factorization.

64338223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20336.

The product of its digits is 20736, while the sum is 31.

The square root of 64338223 is about 8021.1110826369. Note that the first 3 decimals coincide. The cubic root of 64338223 is about 400.7033936185.

The spelling of 64338223 in words is "sixty-four million, three hundred thirty-eight thousand, two hundred twenty-three".