12169687 has 4 divisors (see below), whose sum is σ = 12193480. Its totient is φ = 12145896.

The previous prime is 12169669. The next prime is 12169693. The reversal of 12169687 is 78696121.

12169687 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78696121 = 7 ⋅11242303.

It is a cyclic number.

It is not a de Polignac number, because 12169687 - 2²³ = 3781079 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 (12169607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11112 + ... + 12157.

It is an arithmetic number, because the mean of its divisors is an integer number (3048370).

Almost surely, 2^12169687 is an apocalyptic number.

12169687 is a deficient number, since it is larger than the sum of its proper divisors (23793).

12169687 is an equidigital number, since it uses as much as digits as its factorization.

12169687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23792.

The product of its digits is 36288, while the sum is 40.

The square root of 12169687 is about 3488.5078472034. The cubic root of 12169687 is about 230.0169300707.

The spelling of 12169687 in words is "twelve million, one hundred sixty-nine thousand, six hundred eighty-seven".