64451360 has 48 divisors (see below), whose sum is σ = 154224000. Its totient is φ = 25449216.

The previous prime is 64451351. The next prime is 64451377. The reversal of 64451360 is 6315446.

It is a happy 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, 10091 + ... + 15189.

It is an arithmetic number, because the mean of its divisors is an integer number (3213000).

Almost surely, 2^64451360 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 64451360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77112000).

64451360 is an abundant number, since it is smaller than the sum of its proper divisors (89772640).

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

64451360 is a wasteful number, since it uses less digits than its factorization.

64451360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5193 (or 5185 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 64451360 is about 8028.1604368622. The cubic root of 64451360 is about 400.9381313870.

The spelling of 64451360 in words is "sixty-four million, four hundred fifty-one thousand, three hundred sixty".