64864368 has 80 divisors (see below), whose sum is σ = 189764640. Its totient is φ = 21206016.

The previous prime is 64864351. The next prime is 64864433. The reversal of 64864368 is 86346846.

64864368 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

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 15 ways as a sum of consecutive naturals, for example, 21480 + ... + 24312.

It is an arithmetic number, because the mean of its divisors is an integer number (2372058).

Almost surely, 2^64864368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64864368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94882320).

64864368 is an abundant number, since it is smaller than the sum of its proper divisors (124900272).

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

64864368 is a wasteful number, since it uses less digits than its factorization.

64864368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2903 (or 2891 counting only the distinct ones).

The product of its digits is 663552, while the sum is 45.

The square root of 64864368 is about 8053.8418161769. The cubic root of 64864368 is about 401.7927200505.

The spelling of 64864368 in words is "sixty-four million, eight hundred sixty-four thousand, three hundred sixty-eight".