1668106722 has 16 divisors (see below), whose sum is σ = 3336613632. Its totient is φ = 555968880.

The previous prime is 1668106681. The next prime is 1668106747. The reversal of 1668106722 is 2276018661.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91272 + ... + 108012.

It is an arithmetic number, because the mean of its divisors is an integer number (208538352).

Almost surely, 2^1668106722 is an apocalyptic number.

1668106722 is an abundant number, since it is smaller than the sum of its proper divisors (1668506910).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1668106722 is a wasteful number, since it uses less digits than its factorization.

1668106722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33353.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 1668106722 is about 40842.4622421323. The cubic root of 1668106722 is about 1185.9724780735.

The spelling of 1668106722 in words is "one billion, six hundred sixty-eight million, one hundred six thousand, seven hundred twenty-two".