165610222 has 8 divisors (see below), whose sum is σ = 250083000. Its totient is φ = 82249224.

The previous prime is 165610219. The next prime is 165610231. The reversal of 165610222 is 222016561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277572 + ... + 278167.

It is an arithmetic number, because the mean of its divisors is an integer number (31260375).

Almost surely, 2^165610222 is an apocalyptic number.

165610222 is a deficient number, since it is larger than the sum of its proper divisors (84472778).

165610222 is a wasteful number, since it uses less digits than its factorization.

165610222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555890.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 165610222 is about 12868.9635169271. The cubic root of 165610222 is about 549.1559748505.

Adding to 165610222 its reverse (222016561), we get a palindrome (387626783).

The spelling of 165610222 in words is "one hundred sixty-five million, six hundred ten thousand, two hundred twenty-two".