664224630 has 16 divisors (see below), whose sum is σ = 1594139184. Its totient is φ = 177126560.

The previous prime is 664224623. The next prime is 664224683. The reversal of 664224630 is 36422466.

It is a junction number, because it is equal to n+sod(n) for n = 664224591 and 664224600.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11070381 + ... + 11070440.

It is an arithmetic number, because the mean of its divisors is an integer number (99633699).

Almost surely, 2^664224630 is an apocalyptic number.

664224630 is an abundant number, since it is smaller than the sum of its proper divisors (929914554).

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

664224630 is a wasteful number, since it uses less digits than its factorization.

664224630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22140831.

The product of its (nonzero) digits is 41472, while the sum is 33.

The square root of 664224630 is about 25772.5557521950. Note that the first 3 decimals coincide. The cubic root of 664224630 is about 872.5125019076.

The spelling of 664224630 in words is "six hundred sixty-four million, two hundred twenty-four thousand, six hundred thirty".