64051320 has 96 divisors (see below), whose sum is σ = 201070800. Its totient is φ = 16321536.

The previous prime is 64051319. The next prime is 64051333. The reversal of 64051320 is 2315046.

It is a happy number.

64051320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 62976 + ... + 63984.

Almost surely, 2^64051320 is an apocalyptic number.

64051320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64051320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100535400).

64051320 is an abundant number, since it is smaller than the sum of its proper divisors (137019480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64051320 is a wasteful number, since it uses less digits than its factorization.

64051320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069 (or 1042 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 64051320 is about 8003.2068572542. The cubic root of 64051320 is about 400.1068881015.

Adding to 64051320 its reverse (2315046), we get a palindrome (66366366).

The spelling of 64051320 in words is "sixty-four million, fifty-one thousand, three hundred twenty".