12163656 has 32 divisors (see below), whose sum is σ = 31392000. Its totient is φ = 3923520.

The previous prime is 12163621. The next prime is 12163661. The reversal of 12163656 is 65636121.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7431 + ... + 8918.

It is an arithmetic number, because the mean of its divisors is an integer number (981000).

Almost surely, 2^12163656 is an apocalyptic number.

It is an amenable number.

12163656 is an abundant number, since it is smaller than the sum of its proper divisors (19228344).

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

12163656 is a wasteful number, since it uses less digits than its factorization.

12163656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16389 (or 16385 counting only the distinct ones).

The product of its digits is 6480, while the sum is 30.

The square root of 12163656 is about 3487.6433303880. The cubic root of 12163656 is about 229.9789268658.

Adding to 12163656 its reverse (65636121), we get a palindrome (77799777).

The spelling of 12163656 in words is "twelve million, one hundred sixty-three thousand, six hundred fifty-six".