66423422 has 12 divisors (see below), whose sum is σ = 107889480. Its totient is φ = 30656808.

The previous prime is 66423397. The next prime is 66423463. The reversal of 66423422 is 22432466.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 97922 + ... + 98597.

It is an arithmetic number, because the mean of its divisors is an integer number (8990790).

Almost surely, 2^66423422 is an apocalyptic number.

66423422 is a deficient number, since it is larger than the sum of its proper divisors (41466058).

66423422 is a wasteful number, since it uses less digits than its factorization.

66423422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196547 (or 196534 counting only the distinct ones).

The product of its digits is 13824, while the sum is 29.

The square root of 66423422 is about 8150.0565642209. The cubic root of 66423422 is about 404.9863776346.

Adding to 66423422 its reverse (22432466), we get a palindrome (88855888).

The spelling of 66423422 in words is "sixty-six million, four hundred twenty-three thousand, four hundred twenty-two".