665072022 has 16 divisors (see below), whose sum is σ = 1376011440. Its totient is φ = 214046112.

The previous prime is 665071999. The next prime is 665072027. The reversal of 665072022 is 220270566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665072027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1910953 + ... + 1911300.

It is an arithmetic number, because the mean of its divisors is an integer number (86000715).

Almost surely, 2^665072022 is an apocalyptic number.

665072022 is an abundant number, since it is smaller than the sum of its proper divisors (710939418).

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

665072022 is a wasteful number, since it uses less digits than its factorization.

665072022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3822287.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 665072022 is about 25788.9903253307. The cubic root of 665072022 is about 872.8833834275.

The spelling of 665072022 in words is "six hundred sixty-five million, seventy-two thousand, twenty-two".