12750066 has 48 divisors (see below), whose sum is σ = 32258304. Its totient is φ = 3563712.

The previous prime is 12750011. The next prime is 12750071. The reversal of 12750066 is 66005721.

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 23 ways as a sum of consecutive naturals, for example, 4846 + ... + 6998.

It is an arithmetic number, because the mean of its divisors is an integer number (672048).

Almost surely, 2^12750066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12750066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16129152).

12750066 is an abundant number, since it is smaller than the sum of its proper divisors (19508238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12750066 is a wasteful number, since it uses less digits than its factorization.

12750066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2215 (or 2212 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 12750066 is about 3570.7234561080. The cubic root of 12750066 is about 233.6168395199.

Adding to 12750066 its reverse (66005721), we get a palindrome (78755787).

The spelling of 12750066 in words is "twelve million, seven hundred fifty thousand, sixty-six".