12103647 has 4 divisors (see below), whose sum is σ = 16138200. Its totient is φ = 8069096.

The previous prime is 12103639. The next prime is 12103657. The reversal of 12103647 is 74630121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12103647 - 2³ = 12103639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12103657) 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 3 ways as a sum of consecutive naturals, for example, 2017272 + ... + 2017277.

It is an arithmetic number, because the mean of its divisors is an integer number (4034550).

Almost surely, 2^12103647 is an apocalyptic number.

12103647 is a deficient number, since it is larger than the sum of its proper divisors (4034553).

12103647 is an equidigital number, since it uses as much as digits as its factorization.

12103647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4034552.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 12103647 is about 3479.0296060827. The cubic root of 12103647 is about 229.6001053693.

Adding to 12103647 its reverse (74630121), we get a palindrome (86733768).

The spelling of 12103647 in words is "twelve million, one hundred three thousand, six hundred forty-seven".