668680082 has 8 divisors (see below), whose sum is σ = 1146308736. Its totient is φ = 286577172.

The previous prime is 668680069. The next prime is 668680141. The reversal of 668680082 is 280086866.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 23881418 + ... + 23881445.

It is an arithmetic number, because the mean of its divisors is an integer number (143288592).

Almost surely, 2^668680082 is an apocalyptic number.

668680082 is a deficient number, since it is larger than the sum of its proper divisors (477628654).

668680082 is a wasteful number, since it uses less digits than its factorization.

668680082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47762872.

The product of its (nonzero) digits is 221184, while the sum is 44.

The square root of 668680082 is about 25858.8492009989. The cubic root of 668680082 is about 874.4590210309.

It can be divided in two parts, 6686 and 80082, that added together give a palindrome (86768).

The spelling of 668680082 in words is "six hundred sixty-eight million, six hundred eighty thousand, eighty-two".