664528352 has 24 divisors (see below), whose sum is σ = 1311271416. Its totient is φ = 331507072.

The previous prime is 664528313. The next prime is 664528373. The reversal of 664528352 is 253825466.

It is a happy number.

It is a super-2 number, since 2×664528352² = 883195861223671808, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 9263 + ... + 37614.

It is an arithmetic number, because the mean of its divisors is an integer number (54636309).

Almost surely, 2^664528352 is an apocalyptic number.

It is an amenable number.

664528352 is a deficient number, since it is larger than the sum of its proper divisors (646743064).

664528352 is a wasteful number, since it uses less digits than its factorization.

664528352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47330 (or 47322 counting only the distinct ones).

The product of its digits is 345600, while the sum is 41.

The square root of 664528352 is about 25778.4474319149. The cubic root of 664528352 is about 872.6454694054.

The spelling of 664528352 in words is "six hundred sixty-four million, five hundred twenty-eight thousand, three hundred fifty-two".