64530630 has 48 divisors (see below), whose sum is σ = 169372944. Its totient is φ = 17044800.

The previous prime is 64530629. The next prime is 64530643. The reversal of 64530630 is 3603546.

64530630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 64530594 and 64530603.

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 23 ways as a sum of consecutive naturals, for example, 6280 + ... + 12980.

It is an arithmetic number, because the mean of its divisors is an integer number (3528603).

Almost surely, 2^64530630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64530630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84686472).

64530630 is an abundant number, since it is smaller than the sum of its proper divisors (104842314).

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

64530630 is a wasteful number, since it uses less digits than its factorization.

64530630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6821 (or 6818 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 64530630 is about 8033.0959162704. The cubic root of 64530630 is about 401.1024379517.

The spelling of 64530630 in words is "sixty-four million, five hundred thirty thousand, six hundred thirty".