1668068674 has 8 divisors (see below), whose sum is σ = 2502318780. Its totient is φ = 833962416.

The previous prime is 1668068651. The next prime is 1668068683. The reversal of 1668068674 is 4768608661.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1632725649 + 35343025 = 40407^2 + 5945^2 .

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, 372 + ... + 57760.

Almost surely, 2^1668068674 is an apocalyptic number.

1668068674 is a deficient number, since it is larger than the sum of its proper divisors (834250106).

1668068674 is a wasteful number, since it uses less digits than its factorization.

1668068674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71924.

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

The square root of 1668068674 is about 40841.9964497330. The cubic root of 1668068674 is about 1185.9634610198.

The spelling of 1668068674 in words is "one billion, six hundred sixty-eight million, sixty-eight thousand, six hundred seventy-four".