668027843684 has 24 divisors (see below), whose sum is σ = 1170692429760. Its totient is φ = 333544422176.

The previous prime is 668027843683. The next prime is 668027843689. The reversal of 668027843684 is 486348720866.

It is a super-2 number, since 2×668027843684² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (668027843683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30016649 + ... + 30038895.

It is an arithmetic number, because the mean of its divisors is an integer number (48778851240).

Almost surely, 2^668027843684 is an apocalyptic number.

It is an amenable number.

668027843684 is a deficient number, since it is larger than the sum of its proper divisors (502664586076).

668027843684 is a wasteful number, since it uses less digits than its factorization.

668027843684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32467 (or 32465 counting only the distinct ones).

The product of its (nonzero) digits is 74317824, while the sum is 62.

The spelling of 668027843684 in words is "six hundred sixty-eight billion, twenty-seven million, eight hundred forty-three thousand, six hundred eighty-four".