665151122 has 16 divisors (see below), whose sum is σ = 1041653952. Its totient is φ = 317948400.

The previous prime is 665151079. The next prime is 665151139. The reversal of 665151122 is 221151566.

It is a happy number.

665151122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 168293 + ... + 172199.

It is an arithmetic number, because the mean of its divisors is an integer number (65103372).

Almost surely, 2^665151122 is an apocalyptic number.

665151122 is a deficient number, since it is larger than the sum of its proper divisors (376502830).

665151122 is a wasteful number, since it uses less digits than its factorization.

665151122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7633.

The product of its digits is 3600, while the sum is 29.

The square root of 665151122 is about 25790.5238799060. The cubic root of 665151122 is about 872.9179873683.

The spelling of 665151122 in words is "six hundred sixty-five million, one hundred fifty-one thousand, one hundred twenty-two".