64434321 has 36 divisors (see below), whose sum is σ = 108913792. Its totient is φ = 35958384.

The previous prime is 64434319. The next prime is 64434323. The reversal of 64434321 is 12343446.

64434321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (64434319) and next prime (64434323).

It is not a de Polignac number, because 64434321 - 2¹ = 64434319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64434323) 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 35 ways as a sum of consecutive naturals, for example, 138936 + ... + 139398.

Almost surely, 2^64434321 is an apocalyptic number.

It is an amenable number.

64434321 is a deficient number, since it is larger than the sum of its proper divisors (44479471).

64434321 is a wasteful number, since it uses less digits than its factorization.

64434321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570 (or 520 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 64434321 is about 8027.0991647045. The cubic root of 64434321 is about 400.9027962809.

Adding to 64434321 its reverse (12343446), we get a palindrome (76777767).

The spelling of 64434321 in words is "sixty-four million, four hundred thirty-four thousand, three hundred twenty-one".