12146689 has 4 divisors (see below), whose sum is σ = 12313156. Its totient is φ = 11980224.

The previous prime is 12146669. The next prime is 12146711. The reversal of 12146689 is 98664121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98664121 = 3691 ⋅26731.

It can be written as a sum of positive squares in 2 ways, for example, as 3783025 + 8363664 = 1945^2 + 2892^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12146689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12146639) 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, 83124 + ... + 83269.

It is an arithmetic number, because the mean of its divisors is an integer number (3078289).

Almost surely, 2^12146689 is an apocalyptic number.

It is an amenable number.

12146689 is a deficient number, since it is larger than the sum of its proper divisors (166467).

12146689 is an equidigital number, since it uses as much as digits as its factorization.

12146689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166466.

The product of its digits is 20736, while the sum is 37.

The square root of 12146689 is about 3485.2100367123. The cubic root of 12146689 is about 229.8719451004.

The spelling of 12146689 in words is "twelve million, one hundred forty-six thousand, six hundred eighty-nine".