66211422 has 8 divisors (see below), whose sum is σ = 132422856. Its totient is φ = 22070472.

The previous prime is 66211421. The next prime is 66211423. The reversal of 66211422 is 22411266.

It is an interprime number because it is at equal distance from previous prime (66211421) and next prime (66211423).

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

66211422 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 66211392 and 66211401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66211421) 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, 5517613 + ... + 5517624.

It is an arithmetic number, because the mean of its divisors is an integer number (16552857).

Almost surely, 2^66211422 is an apocalyptic number.

66211422 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66211422 is a wasteful number, since it uses less digits than its factorization.

66211422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11035242.

The product of its digits is 1152, while the sum is 24.

The square root of 66211422 is about 8137.0401252544. The cubic root of 66211422 is about 404.5550608210. Note that the first 3 decimals are identical.

Adding to 66211422 its reverse (22411266), we get a palindrome (88622688).

The spelling of 66211422 in words is "sixty-six million, two hundred eleven thousand, four hundred twenty-two".