64426321 has 8 divisors (see below), whose sum is σ = 68080320. Its totient is φ = 60798672.

The previous prime is 64426301. The next prime is 64426337. The reversal of 64426321 is 12362446.

64426321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 64426321 - 2¹¹ = 64424273 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64426321.

It is not an unprimeable number, because it can be changed into a prime (64426301) 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 7 ways as a sum of consecutive naturals, for example, 1450 + ... + 11443.

It is an arithmetic number, because the mean of its divisors is an integer number (8510040).

Almost surely, 2^64426321 is an apocalyptic number.

It is an amenable number.

64426321 is a deficient number, since it is larger than the sum of its proper divisors (3653999).

64426321 is a wasteful number, since it uses less digits than its factorization.

64426321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13175.

The product of its digits is 6912, while the sum is 28.

The square root of 64426321 is about 8026.6008372162. The cubic root of 64426321 is about 400.8862039066.

Adding to 64426321 its reverse (12362446), we get a palindrome (76788767).

The spelling of 64426321 in words is "sixty-four million, four hundred twenty-six thousand, three hundred twenty-one".