1668762682 has 12 divisors (see below), whose sum is σ = 2508977178. Its totient is φ = 832441400.

The previous prime is 1668762593. The next prime is 1668762731. The reversal of 1668762682 is 2862678661.

It can be written as a sum of positive squares in only one way, i.e., 1581732441 + 87030241 = 39771^2 + 9329^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 480432 + ... + 483892.

Almost surely, 2^1668762682 is an apocalyptic number.

1668762682 is a deficient number, since it is larger than the sum of its proper divisors (840214496).

1668762682 is an frugal number, since it uses more digits than its factorization.

1668762682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4445 (or 3954 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 52.

The square root of 1668762682 is about 40850.4918207847. The cubic root of 1668762682 is about 1186.1279134834.

The spelling of 1668762682 in words is "one billion, six hundred sixty-eight million, seven hundred sixty-two thousand, six hundred eighty-two".