22078666 has 8 divisors (see below), whose sum is σ = 34557984. Its totient is φ = 10559340.

The previous prime is 22078663. The next prime is 22078669. The reversal of 22078666 is 66687022.

It is an interprime number because it is at equal distance from previous prime (22078663) and next prime (22078669).

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

It is not an unprimeable number, because it can be changed into a prime (22078663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239940 + ... + 240031.

It is an arithmetic number, because the mean of its divisors is an integer number (4319748).

Almost surely, 2^22078666 is an apocalyptic number.

22078666 is a deficient number, since it is larger than the sum of its proper divisors (12479318).

22078666 is a wasteful number, since it uses less digits than its factorization.

22078666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479996.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 22078666 is about 4698.7941006177. The cubic root of 22078666 is about 280.5375133986.

The spelling of 22078666 in words is "twenty-two million, seventy-eight thousand, six hundred sixty-six".