64338321 has 4 divisors (see below), whose sum is σ = 85784432. Its totient is φ = 42892212.

The previous prime is 64338293. The next prime is 64338341. The reversal of 64338321 is 12383346.

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 not a de Polignac number, because 64338321 - 2⁵ = 64338289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64338341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10723051 + ... + 10723056.

It is an arithmetic number, because the mean of its divisors is an integer number (21446108).

Almost surely, 2^64338321 is an apocalyptic number.

It is an amenable number.

64338321 is a deficient number, since it is larger than the sum of its proper divisors (21446111).

64338321 is a wasteful number, since it uses less digits than its factorization.

64338321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21446110.

The product of its digits is 10368, while the sum is 30.

The square root of 64338321 is about 8021.1171915139. The cubic root of 64338321 is about 400.7035970689.

The spelling of 64338321 in words is "sixty-four million, three hundred thirty-eight thousand, three hundred twenty-one".