1665667322 has 16 divisors (see below), whose sum is σ = 2743003872. Its totient is φ = 752297520.

The previous prime is 1665667309. The next prime is 1665667349. The reversal of 1665667322 is 2237665661.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237668 + ... + 244575.

It is an arithmetic number, because the mean of its divisors is an integer number (171437742).

Almost surely, 2^1665667322 is an apocalyptic number.

1665667322 is a deficient number, since it is larger than the sum of its proper divisors (1077336550).

1665667322 is a wasteful number, since it uses less digits than its factorization.

1665667322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482413.

The product of its digits is 544320, while the sum is 44.

The square root of 1665667322 is about 40812.5877885733. The cubic root of 1665667322 is about 1185.3940832942.

The spelling of 1665667322 in words is "one billion, six hundred sixty-five million, six hundred sixty-seven thousand, three hundred twenty-two".