1668065674 has 32 divisors (see below), whose sum is σ = 2827535040. Its totient is φ = 731068800.

The previous prime is 1668065617. The next prime is 1668065677. The reversal of 1668065674 is 4765608661.

It is not an unprimeable number, because it can be changed into a prime (1668065677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 657789 + ... + 660319.

It is an arithmetic number, because the mean of its divisors is an integer number (88360470).

Almost surely, 2^1668065674 is an apocalyptic number.

1668065674 is a deficient number, since it is larger than the sum of its proper divisors (1159469366).

1668065674 is a wasteful number, since it uses less digits than its factorization.

1668065674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3606.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The square root of 1668065674 is about 40841.9597228145. The cubic root of 1668065674 is about 1185.9627500394.

The spelling of 1668065674 in words is "one billion, six hundred sixty-eight million, sixty-five thousand, six hundred seventy-four".