668284882 has 8 divisors (see below), whose sum is σ = 1012352652. Its totient is φ = 330834000.

The previous prime is 668284847. The next prime is 668284901. The reversal of 668284882 is 288482866.

It can be written as a sum of positive squares in 2 ways, for example, as 575952001 + 92332881 = 23999^2 + 9609^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1653969 + ... + 1654372.

Almost surely, 2^668284882 is an apocalyptic number.

668284882 is a deficient number, since it is larger than the sum of its proper divisors (344067770).

668284882 is a wasteful number, since it uses less digits than its factorization.

668284882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3308444.

The product of its digits is 2359296, while the sum is 52.

The square root of 668284882 is about 25851.2065869274. The cubic root of 668284882 is about 874.2867142637.

The spelling of 668284882 in words is "six hundred sixty-eight million, two hundred eighty-four thousand, eight hundred eighty-two".