16605222 has 16 divisors (see below), whose sum is σ = 33454512. Its totient is φ = 5494400.

The previous prime is 16605217. The next prime is 16605227. The reversal of 16605222 is 22250661.

16605222 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (16605217) and next prime (16605227).

It is a super-3 number, since 3×16605222³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16605192 and 16605201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16605227) 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, 9279 + ... + 10922.

It is an arithmetic number, because the mean of its divisors is an integer number (2090907).

Almost surely, 2^16605222 is an apocalyptic number.

16605222 is an abundant number, since it is smaller than the sum of its proper divisors (16849290).

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

16605222 is a wasteful number, since it uses less digits than its factorization.

16605222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20343.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 16605222 is about 4074.9505518472. The cubic root of 16605222 is about 255.1221867335.

Adding to 16605222 its reverse (22250661), we get a palindrome (38855883).

The spelling of 16605222 in words is "sixteen million, six hundred five thousand, two hundred twenty-two".