16226605 has 4 divisors (see below), whose sum is σ = 19471932. Its totient is φ = 12981280.

The previous prime is 16226599. The next prime is 16226621. The reversal of 16226605 is 50662261.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2896804 + 13329801 = 1702^2 + 3651^2 .

It is not a de Polignac number, because 16226605 - 2³ = 16226597 is a prime.

It is a Duffinian number.

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, 1622656 + ... + 1622665.

It is an arithmetic number, because the mean of its divisors is an integer number (4867983).

Almost surely, 2^16226605 is an apocalyptic number.

It is an amenable number.

16226605 is a deficient number, since it is larger than the sum of its proper divisors (3245327).

16226605 is an equidigital number, since it uses as much as digits as its factorization.

16226605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3245326.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 16226605 is about 4028.2260363589. The cubic root of 16226605 is about 253.1682394253.

Adding to 16226605 its reverse (50662261), we get a palindrome (66888866).

The spelling of 16226605 in words is "sixteen million, two hundred twenty-six thousand, six hundred five".