668998248612 has 24 divisors (see below), whose sum is σ = 1568919756096. Its totient is φ = 221867438688.

The previous prime is 668998248577. The next prime is 668998248613. The reversal of 668998248612 is 216842899866.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (668998248613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141494728 + ... + 141499455.

It is an arithmetic number, because the mean of its divisors is an integer number (65371656504).

Almost surely, 2^668998248612 is an apocalyptic number.

It is an amenable number.

668998248612 is an abundant number, since it is smaller than the sum of its proper divisors (899921507484).

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

668998248612 is a wasteful number, since it uses less digits than its factorization.

668998248612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282994387 (or 282994385 counting only the distinct ones).

The product of its digits is 143327232, while the sum is 69.

The spelling of 668998248612 in words is "six hundred sixty-eight billion, nine hundred ninety-eight million, two hundred forty-eight thousand, six hundred twelve".