12161606 has 8 divisors (see below), whose sum is σ = 18257400. Its totient is φ = 6075808.

The previous prime is 12161599. The next prime is 12161623. The reversal of 12161606 is 60616121.

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

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 2750 + ... + 5646.

It is an arithmetic number, because the mean of its divisors is an integer number (2282175).

Almost surely, 2^12161606 is an apocalyptic number.

12161606 is a deficient number, since it is larger than the sum of its proper divisors (6095794).

12161606 is a wasteful number, since it uses less digits than its factorization.

12161606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4998.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 12161606 is about 3487.3494232726. The cubic root of 12161606 is about 229.9660063182.

Adding to 12161606 its reverse (60616121), we get a palindrome (72777727).

The spelling of 12161606 in words is "twelve million, one hundred sixty-one thousand, six hundred six".