64578 has 16 divisors (see below), whose sum is σ = 132480. Its totient is φ = 20976.

The previous prime is 64577. The next prime is 64579. The reversal of 64578 is 87546.

It is a happy number.

64578 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (64577) and next prime (64579).

It is a plaindrome in base 11.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (64577) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168 + ... + 396.

It is an arithmetic number, because the mean of its divisors is an integer number (8280).

2⁶⁴⁵⁷⁸ is an apocalyptic number.

64578 is an abundant number, since it is smaller than the sum of its proper divisors (67902).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66240).

64578 is a wasteful number, since it uses less digits than its factorization.

64578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281.

The product of its digits is 6720, while the sum is 30.

The square root of 64578 is about 254.1220179363. The cubic root of 64578 is about 40.1200559703.

The spelling of 64578 in words is "sixty-four thousand, five hundred seventy-eight".