663934216 has 32 divisors (see below), whose sum is σ = 1394758080. Its totient is φ = 293630400.

The previous prime is 663934211. The next prime is 663934231. The reversal of 663934216 is 612439366.

It is not an unprimeable number, because it can be changed into a prime (663934211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98700 + ... + 105211.

It is an arithmetic number, because the mean of its divisors is an integer number (43586190).

Almost surely, 2^663934216 is an apocalyptic number.

It is an amenable number.

663934216 is an abundant number, since it is smaller than the sum of its proper divisors (730823864).

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

663934216 is a wasteful number, since it uses less digits than its factorization.

663934216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203965 (or 203961 counting only the distinct ones).

The product of its digits is 139968, while the sum is 40.

The square root of 663934216 is about 25766.9209646787. The cubic root of 663934216 is about 872.3853226510.

The spelling of 663934216 in words is "six hundred sixty-three million, nine hundred thirty-four thousand, two hundred sixteen".