1666050722 has 16 divisors (see below), whose sum is σ = 2856610752. Its totient is φ = 713890800.

The previous prime is 1666050709. The next prime is 1666050733. The reversal of 1666050722 is 2270506661.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 143528 + ... + 154700.

It is an arithmetic number, because the mean of its divisors is an integer number (178538172).

Almost surely, 2^1666050722 is an apocalyptic number.

1666050722 is a deficient number, since it is larger than the sum of its proper divisors (1190560030).

1666050722 is a wasteful number, since it uses less digits than its factorization.

1666050722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21833.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 1666050722 is about 40817.2845985619. The cubic root of 1666050722 is about 1185.4850268697.

The spelling of 1666050722 in words is "one billion, six hundred sixty-six million, fifty thousand, seven hundred twenty-two".