12740066 has 8 divisors (see below), whose sum is σ = 19221084. Its totient is φ = 6333040.

The previous prime is 12740059. The next prime is 12740081. The reversal of 12740066 is 66004721.

It can be written as a sum of positive squares in 2 ways, for example, as 12453841 + 286225 = 3529^2 + 535^2 .

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

It is an unprimeable number.

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, 18065 + ... + 18756.

Almost surely, 2^12740066 is an apocalyptic number.

12740066 is a deficient number, since it is larger than the sum of its proper divisors (6481018).

12740066 is a wasteful number, since it uses less digits than its factorization.

12740066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36996.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 12740066 is about 3569.3229049779. The cubic root of 12740066 is about 233.5557475637. Note that the first 3 decimals are identical.

Adding to 12740066 its reverse (66004721), we get a palindrome (78744787).

The spelling of 12740066 in words is "twelve million, seven hundred forty thousand, sixty-six".