22666665 has 24 divisors (see below), whose sum is σ = 42189120. Its totient is φ = 10361568.

The previous prime is 22666663. The next prime is 22666687. The reversal of 22666665 is 56666622.

It is not a de Polignac number, because 22666665 - 2¹ = 22666663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22666663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14685 + ... + 16154.

It is an arithmetic number, because the mean of its divisors is an integer number (1757880).

Almost surely, 2^22666665 is an apocalyptic number.

It is an amenable number.

22666665 is a deficient number, since it is larger than the sum of its proper divisors (19522455).

22666665 is a wasteful number, since it uses less digits than its factorization.

22666665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30861 (or 30854 counting only the distinct ones).

The product of its digits is 155520, while the sum is 39.

The square root of 22666665 is about 4760.9521106602. The cubic root of 22666665 is about 283.0061513561.

The spelling of 22666665 in words is "twenty-two million, six hundred sixty-six thousand, six hundred sixty-five".