12663198 has 48 divisors (see below), whose sum is σ = 30073680. Its totient is φ = 3833088.

The previous prime is 12663197. The next prime is 12663223. The reversal of 12663198 is 89136621.

12663198 is a `hidden beast` number, since 12 + 6 + 631 + 9 + 8 = 666.

12663198 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12663191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8161 + ... + 9587.

It is an arithmetic number, because the mean of its divisors is an integer number (626535).

Almost surely, 2^12663198 is an apocalyptic number.

12663198 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12663198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15036840).

12663198 is an abundant number, since it is smaller than the sum of its proper divisors (17410482).

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

12663198 is a wasteful number, since it uses less digits than its factorization.

12663198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481 (or 1478 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 12663198 is about 3558.5387450469. The cubic root of 12663198 is about 233.0850751851.

The spelling of 12663198 in words is "twelve million, six hundred sixty-three thousand, one hundred ninety-eight".