12660016 has 10 divisors (see below), whose sum is σ = 24528812. Its totient is φ = 6330000.

The previous prime is 12660013. The next prime is 12660091. The reversal of 12660016 is 61006621.

It is not an unprimeable number, because it can be changed into a prime (12660013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395610 + ... + 395641.

Almost surely, 2^12660016 is an apocalyptic number.

12660016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12660016 is a deficient number, since it is larger than the sum of its proper divisors (11868796).

12660016 is an equidigital number, since it uses as much as digits as its factorization.

12660016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791259 (or 791253 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 12660016 is about 3558.0916233284. The cubic root of 12660016 is about 233.0655503952.

Adding to 12660016 its reverse (61006621), we get a palindrome (73666637).

The spelling of 12660016 in words is "twelve million, six hundred sixty thousand, sixteen".