668385412 has 24 divisors (see below), whose sum is σ = 1182384896. Its totient is φ = 330581088.

The previous prime is 668385391. The next prime is 668385433. The reversal of 668385412 is 214583866.

It is an interprime number because it is at equal distance from previous prime (668385391) and next prime (668385433).

It is an unprimeable number.

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, 143098 + ... + 147694.

Almost surely, 2^668385412 is an apocalyptic number.

It is an amenable number.

668385412 is a deficient number, since it is larger than the sum of its proper divisors (513999484).

668385412 is a wasteful number, since it uses less digits than its factorization.

668385412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4987 (or 4985 counting only the distinct ones).

The product of its digits is 276480, while the sum is 43.

The square root of 668385412 is about 25853.1509104790. The cubic root of 668385412 is about 874.3305516744.

It can be divided in two parts, 6683854 and 12, that added together give a palindrome (6683866).

The spelling of 668385412 in words is "six hundred sixty-eight million, three hundred eighty-five thousand, four hundred twelve".