12560066 has 4 divisors (see below), whose sum is σ = 18840102. Its totient is φ = 6280032.

The previous prime is 12560033. The next prime is 12560069. The reversal of 12560066 is 66006521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66006521 = 7 ⋅9429503.

It can be written as a sum of positive squares in only one way, i.e., 7812025 + 4748041 = 2795^2 + 2179^2 .

It is not an unprimeable number, because it can be changed into a prime (12560069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3140015 + ... + 3140018.

Almost surely, 2^12560066 is an apocalyptic number.

12560066 is a deficient number, since it is larger than the sum of its proper divisors (6280036).

12560066 is an equidigital number, since it uses as much as digits as its factorization.

12560066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6280035.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 12560066 is about 3544.0183408103. The cubic root of 12560066 is about 232.4505834005.

Adding to 12560066 its reverse (66006521), we get a palindrome (78566587).

The spelling of 12560066 in words is "twelve million, five hundred sixty thousand, sixty-six".