22061666 has 16 divisors (see below), whose sum is σ = 36942048. Its totient is φ = 9794400.

The previous prime is 22061647. The next prime is 22061671. The reversal of 22061666 is 66616022.

It is a Curzon 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, 10715 + ... + 12606.

It is an arithmetic number, because the mean of its divisors is an integer number (2308878).

Almost surely, 2^22061666 is an apocalyptic number.

22061666 is a deficient number, since it is larger than the sum of its proper divisors (14880382).

22061666 is a wasteful number, since it uses less digits than its factorization.

22061666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23377.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 22061666 is about 4696.9847774929. The cubic root of 22061666 is about 280.4654927085.

Adding to 22061666 its reverse (66616022), we get a palindrome (88677688).

The spelling of 22061666 in words is "twenty-two million, sixty-one thousand, six hundred sixty-six".