64813360 has 40 divisors (see below), whose sum is σ = 152400960. Its totient is φ = 25631232.

The previous prime is 64813339. The next prime is 64813387. The reversal of 64813360 is 6331846.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2569 + ... + 11671.

It is an arithmetic number, because the mean of its divisors is an integer number (3810024).

Almost surely, 2^64813360 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 64813360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76200480).

64813360 is an abundant number, since it is smaller than the sum of its proper divisors (87587600).

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

64813360 is a wasteful number, since it uses less digits than its factorization.

64813360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9205 (or 9199 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 64813360 is about 8050.6745059032. The cubic root of 64813360 is about 401.6873719309.

The spelling of 64813360 in words is "sixty-four million, eight hundred thirteen thousand, three hundred sixty".