2067791668 has 12 divisors (see below), whose sum is σ = 3831496452. Its totient is φ = 973078400.

The previous prime is 2067791647. The next prime is 2067791681. The reversal of 2067791668 is 8661977602.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1531313424 + 536478244 = 39132^2 + 23162^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15204283 + ... + 15204418.

It is an arithmetic number, because the mean of its divisors is an integer number (319291371).

Almost surely, 2^2067791668 is an apocalyptic number.

It is an amenable number.

2067791668 is a deficient number, since it is larger than the sum of its proper divisors (1763704784).

2067791668 is a wasteful number, since it uses less digits than its factorization.

2067791668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30408722 (or 30408720 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 52.

The square root of 2067791668 is about 45472.9773381950. The cubic root of 2067791668 is about 1273.9985303608.

The spelling of 2067791668 in words is "two billion, sixty-seven million, seven hundred ninety-one thousand, six hundred sixty-eight".