665016222 has 16 divisors (see below), whose sum is σ = 1432342800. Its totient is φ = 204620352.

The previous prime is 665016179. The next prime is 665016239. The reversal of 665016222 is 222610566.

It is a self number, because there is not a number n which added to its sum of digits gives 665016222.

It is a congruent 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, 4262847 + ... + 4263002.

It is an arithmetic number, because the mean of its divisors is an integer number (89521425).

Almost surely, 2^665016222 is an apocalyptic number.

665016222 is an abundant number, since it is smaller than the sum of its proper divisors (767326578).

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

665016222 is a wasteful number, since it uses less digits than its factorization.

665016222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8525867.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 665016222 is about 25787.9084456262. The cubic root of 665016222 is about 872.8589709061.

Adding to 665016222 its reverse (222610566), we get a palindrome (887626788).

The spelling of 665016222 in words is "six hundred sixty-five million, sixteen thousand, two hundred twenty-two".