16226665 has 32 divisors (see below), whose sum is σ = 25240320. Its totient is φ = 9725184.

The previous prime is 16226621. The next prime is 16226677. The reversal of 16226665 is 56662261.

It is not a de Polignac number, because 16226665 - 2⁷ = 16226537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16226665.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7707 + ... + 9583.

It is an arithmetic number, because the mean of its divisors is an integer number (788760).

Almost surely, 2^16226665 is an apocalyptic number.

It is an amenable number.

16226665 is a deficient number, since it is larger than the sum of its proper divisors (9013655).

16226665 is a wasteful number, since it uses less digits than its factorization.

16226665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921.

The product of its digits is 25920, while the sum is 34.

The square root of 16226665 is about 4028.2334837991. The cubic root of 16226665 is about 253.1685514658.

The spelling of 16226665 in words is "sixteen million, two hundred twenty-six thousand, six hundred sixty-five".