647985324 has 24 divisors (see below), whose sum is σ = 1727961088. Its totient is φ = 185138640.

The previous prime is 647985323. The next prime is 647985337. The reversal of 647985324 is 423589746.

It is not an unprimeable number, because it can be changed into a prime (647985323) by changing a digit.

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, 3856972 + ... + 3857139.

Almost surely, 2^647985324 is an apocalyptic number.

It is an amenable number.

647985324 is an abundant number, since it is smaller than the sum of its proper divisors (1079975764).

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

647985324 is a wasteful number, since it uses less digits than its factorization.

647985324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7714125 (or 7714123 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 48.

The square root of 647985324 is about 25455.5558572191. Note that the first 3 decimals coincide. The cubic root of 647985324 is about 865.3432092787.

The spelling of 647985324 in words is "six hundred forty-seven million, nine hundred eighty-five thousand, three hundred twenty-four".