64321345 has 16 divisors (see below), whose sum is σ = 85043520. Its totient is φ = 46312000.

The previous prime is 64321343. The next prime is 64321357. The reversal of 64321345 is 54312346.

It is not a de Polignac number, because 64321345 - 2¹ = 64321343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64321343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235 + ... + 11344.

It is an arithmetic number, because the mean of its divisors is an integer number (5315220).

Almost surely, 2^64321345 is an apocalyptic number.

It is an amenable number.

64321345 is a deficient number, since it is larger than the sum of its proper divisors (20722175).

64321345 is a wasteful number, since it uses less digits than its factorization.

64321345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11696.

The product of its digits is 8640, while the sum is 28.

The square root of 64321345 is about 8020.0589149956. The cubic root of 64321345 is about 400.6683513941.

It can be divided in two parts, 6432 and 1345, that added together give a palindrome (7777).

The spelling of 64321345 in words is "sixty-four million, three hundred twenty-one thousand, three hundred forty-five".