64530 has 32 divisors (see below), whose sum is σ = 172800. Its totient is φ = 17136.

The previous prime is 64513. The next prime is 64553. The reversal of 64530 is 3546.

It is a happy number.

64530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151 + ... + 389.

It is an arithmetic number, because the mean of its divisors is an integer number (5400).

2⁶⁴⁵³⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86400).

64530 is an abundant number, since it is smaller than the sum of its proper divisors (108270).

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

64530 is a wasteful number, since it uses less digits than its factorization.

64530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 249 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 64530 is about 254.0275575602. The cubic root of 64530 is about 40.1101132652.

The spelling of 64530 in words is "sixty-four thousand, five hundred thirty".