64345844 has 6 divisors (see below), whose sum is σ = 112605234. Its totient is φ = 32172920.

The previous prime is 64345819. The next prime is 64345847. The reversal of 64345844 is 44854346.

It can be written as a sum of positive squares in only one way, i.e., 37699600 + 26646244 = 6140^2 + 5162^2 .

It is a junction number, because it is equal to n+sod(n) for n = 64345798 and 64345807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64345847) 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 as a sum of consecutive naturals, namely, 8043227 + ... + 8043234.

It is an arithmetic number, because the mean of its divisors is an integer number (18767539).

Almost surely, 2^64345844 is an apocalyptic number.

It is an amenable number.

64345844 is a deficient number, since it is larger than the sum of its proper divisors (48259390).

64345844 is a wasteful number, since it uses less digits than its factorization.

64345844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16086465 (or 16086463 counting only the distinct ones).

The product of its digits is 184320, while the sum is 38.

The square root of 64345844 is about 8021.5861274439. The cubic root of 64345844 is about 400.7192143849.

The spelling of 64345844 in words is "sixty-four million, three hundred forty-five thousand, eight hundred forty-four".