668486846268 has 72 divisors (see below), whose sum is σ = 1769384443008. Its totient is φ = 220665527856.

The previous prime is 668486846263. The next prime is 668486846281. The reversal of 668486846268 is 862648684866.

668486846268 is a `hidden beast` number, since 6 + 6 + 8 + 48 + 68 + 462 + 68 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 668486846196 and 668486846205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668486846263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3238446 + ... + 3438677.

Almost surely, 2^668486846268 is an apocalyptic number.

It is an amenable number.

668486846268 is an abundant number, since it is smaller than the sum of its proper divisors (1100897596740).

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

668486846268 is a wasteful number, since it uses less digits than its factorization.

668486846268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6677245 (or 6677231 counting only the distinct ones).

The product of its digits is 1019215872, while the sum is 72.

The spelling of 668486846268 in words is "six hundred sixty-eight billion, four hundred eighty-six million, eight hundred forty-six thousand, two hundred sixty-eight".