665167222 has 16 divisors (see below), whose sum is σ = 1046960640. Its totient is φ = 316342312.

The previous prime is 665167201. The next prime is 665167253. The reversal of 665167222 is 222761566.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32158 + ... + 48625.

It is an arithmetic number, because the mean of its divisors is an integer number (65435040).

Almost surely, 2^665167222 is an apocalyptic number.

665167222 is a deficient number, since it is larger than the sum of its proper divisors (381793418).

665167222 is a wasteful number, since it uses less digits than its factorization.

665167222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80987.

The product of its digits is 60480, while the sum is 37.

The square root of 665167222 is about 25790.8360081638. The cubic root of 665167222 is about 872.9250303122.

The spelling of 665167222 in words is "six hundred sixty-five million, one hundred sixty-seven thousand, two hundred twenty-two".