66824422 has 8 divisors (see below), whose sum is σ = 114556176. Its totient is φ = 28639032.

The previous prime is 66824413. The next prime is 66824423. The reversal of 66824422 is 22442866.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66824423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2386573 + ... + 2386600.

It is an arithmetic number, because the mean of its divisors is an integer number (14319522).

Almost surely, 2^66824422 is an apocalyptic number.

66824422 is a deficient number, since it is larger than the sum of its proper divisors (47731754).

66824422 is a wasteful number, since it uses less digits than its factorization.

66824422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4773182.

The product of its digits is 36864, while the sum is 34.

The square root of 66824422 is about 8174.6206028170. The cubic root of 66824422 is about 405.7997143601.

The spelling of 66824422 in words is "sixty-six million, eight hundred twenty-four thousand, four hundred twenty-two".