22445666 has 8 divisors (see below), whose sum is σ = 33690924. Its totient is φ = 11215360.

The previous prime is 22445663. The next prime is 22445693. The reversal of 22445666 is 66654422.

It can be written as a sum of positive squares in 2 ways, for example, as 21353641 + 1092025 = 4621^2 + 1045^2 .

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

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (22445663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1466 + ... + 6858.

Almost surely, 2^22445666 is an apocalyptic number.

22445666 is a deficient number, since it is larger than the sum of its proper divisors (11245258).

22445666 is a wasteful number, since it uses less digits than its factorization.

22445666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7476.

The product of its digits is 69120, while the sum is 35.

The square root of 22445666 is about 4737.6857219533. The cubic root of 22445666 is about 282.0833799350.

The spelling of 22445666 in words is "twenty-two million, four hundred forty-five thousand, six hundred sixty-six".