66240422 has 16 divisors (see below), whose sum is σ = 104755200. Its totient is φ = 31327560.

The previous prime is 66240401. The next prime is 66240439. The reversal of 66240422 is 22404266.

It is a junction number, because it is equal to n+sod(n) for n = 66240391 and 66240400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36779 + ... + 38537.

It is an arithmetic number, because the mean of its divisors is an integer number (6547200).

Almost surely, 2^66240422 is an apocalyptic number.

66240422 is a deficient number, since it is larger than the sum of its proper divisors (38514778).

66240422 is a wasteful number, since it uses less digits than its factorization.

66240422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2771.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 66240422 is about 8138.8219049197. The cubic root of 66240422 is about 404.6141160110.

Adding to 66240422 its reverse (22404266), we get a palindrome (88644688).

The spelling of 66240422 in words is "sixty-six million, two hundred forty thousand, four hundred twenty-two".