12172663 has 8 divisors (see below), whose sum is σ = 13333680. Its totient is φ = 11061120.

The previous prime is 12172661. The next prime is 12172691. The reversal of 12172663 is 36627121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12172663 - 2¹ = 12172661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12172661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11853 + ... + 12838.

It is an arithmetic number, because the mean of its divisors is an integer number (1666710).

Almost surely, 2^12172663 is an apocalyptic number.

12172663 is a deficient number, since it is larger than the sum of its proper divisors (1161017).

12172663 is a wasteful number, since it uses less digits than its factorization.

12172663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24737.

The product of its digits is 3024, while the sum is 28.

The square root of 12172663 is about 3488.9343645302. The cubic root of 12172663 is about 230.0356781451.

Adding to 12172663 its reverse (36627121), we get a palindrome (48799784).

The spelling of 12172663 in words is "twelve million, one hundred seventy-two thousand, six hundred sixty-three".