22716666 has 64 divisors (see below), whose sum is σ = 60748800. Its totient is φ = 6146928.

The previous prime is 22716643. The next prime is 22716667. The reversal of 22716666 is 66661722.

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 4.

It is a self number, because there is not a number n which added to its sum of digits gives 22716666.

It is not an unprimeable number, because it can be changed into a prime (22716667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5601 + ... + 8763.

It is an arithmetic number, because the mean of its divisors is an integer number (949200).

Almost surely, 2^22716666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22716666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30374400).

22716666 is an abundant number, since it is smaller than the sum of its proper divisors (38032134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22716666 is a wasteful number, since it uses less digits than its factorization.

22716666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3200 (or 3194 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 22716666 is about 4766.2003734631. The cubic root of 22716666 is about 283.2140954633.

The spelling of 22716666 in words is "twenty-two million, seven hundred sixteen thousand, six hundred sixty-six".