12663946 has 16 divisors (see below), whose sum is σ = 20238984. Its totient is φ = 5922304.

The previous prime is 12663943. The next prime is 12663949. The reversal of 12663946 is 64936621.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12663943) and next prime (12663949).

It can be written as a sum of positive squares in 4 ways, for example, as 11826721 + 837225 = 3439^2 + 915^2 .

It is not an unprimeable number, because it can be changed into a prime (12663943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4806 + ... + 6958.

Almost surely, 2^12663946 is an apocalyptic number.

12663946 is a deficient number, since it is larger than the sum of its proper divisors (7575038).

12663946 is a wasteful number, since it uses less digits than its factorization.

12663946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2345.

The product of its digits is 46656, while the sum is 37.

The square root of 12663946 is about 3558.6438428143. The cubic root of 12663946 is about 233.0896644472.

The spelling of 12663946 in words is "twelve million, six hundred sixty-three thousand, nine hundred forty-six".