66105412 has 12 divisors (see below), whose sum is σ = 116267200. Its totient is φ = 32886216.

The previous prime is 66105397. The next prime is 66105419. The reversal of 66105412 is 21450166.

It is not an unprimeable number, because it can be changed into a prime (66105419) 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, 40728 + ... + 42319.

Almost surely, 2^66105412 is an apocalyptic number.

It is an amenable number.

66105412 is a deficient number, since it is larger than the sum of its proper divisors (50161788).

66105412 is a wasteful number, since it uses less digits than its factorization.

66105412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83250 (or 83248 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 66105412 is about 8130.5234763821. The cubic root of 66105412 is about 404.3390367092.

Adding to 66105412 its reverse (21450166), we get a palindrome (87555578).

The spelling of 66105412 in words is "sixty-six million, one hundred five thousand, four hundred twelve".