64671360 has 128 divisors (see below), whose sum is σ = 222082560. Its totient is φ = 15912960.

The previous prime is 64671329. The next prime is 64671361. The reversal of 64671360 is 6317646.

64671360 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (64671361) 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 15 ways as a sum of consecutive naturals, for example, 23665 + ... + 26255.

It is an arithmetic number, because the mean of its divisors is an integer number (1735020).

Almost surely, 2^64671360 is an apocalyptic number.

64671360 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 64671360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111041280).

64671360 is an abundant number, since it is smaller than the sum of its proper divisors (157411200).

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

64671360 is a wasteful number, since it uses less digits than its factorization.

64671360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2626 (or 2614 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 64671360 is about 8041.8505333039. The cubic root of 64671360 is about 401.3938042995.

The spelling of 64671360 in words is "sixty-four million, six hundred seventy-one thousand, three hundred sixty".