664471324 has 24 divisors (see below), whose sum is σ = 1281104496. Its totient is φ = 299040000.

The previous prime is 664471319. The next prime is 664471337. The reversal of 664471324 is 423174466.

664471324 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent 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, 70317 + ... + 79204.

It is an arithmetic number, because the mean of its divisors is an integer number (53379354).

Almost surely, 2^664471324 is an apocalyptic number.

It is an amenable number.

664471324 is a deficient number, since it is larger than the sum of its proper divisors (616633172).

664471324 is a wasteful number, since it uses less digits than its factorization.

664471324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149637 (or 149635 counting only the distinct ones).

The product of its digits is 96768, while the sum is 37.

The square root of 664471324 is about 25777.3412903658. The cubic root of 664471324 is about 872.6205060113.

The spelling of 664471324 in words is "six hundred sixty-four million, four hundred seventy-one thousand, three hundred twenty-four".