664552246 has 8 divisors (see below), whose sum is σ = 1049293080. Its totient is φ = 314787888.

The previous prime is 664552237. The next prime is 664552247. The reversal of 664552246 is 642255466.

664552246 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 664552199 and 664552208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664552247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8744071 + ... + 8744146.

It is an arithmetic number, because the mean of its divisors is an integer number (131161635).

Almost surely, 2^664552246 is an apocalyptic number.

664552246 is a deficient number, since it is larger than the sum of its proper divisors (384740834).

664552246 is a wasteful number, since it uses less digits than its factorization.

664552246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17488238.

The product of its digits is 345600, while the sum is 40.

The square root of 664552246 is about 25778.9108769164. The cubic root of 664552246 is about 872.6559283225.

The spelling of 664552246 in words is "six hundred sixty-four million, five hundred fifty-two thousand, two hundred forty-six".