12146669 has 2 divisors, whose sum is σ = 12146670. Its totient is φ = 12146668.

The previous prime is 12146647. The next prime is 12146711. The reversal of 12146669 is 96664121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12145225 + 1444 = 3485^2 + 38^2 .

It is a cyclic number.

It is not a de Polignac number, because 12146669 - 2⁸ = 12146413 is a prime.

It is a super-2 number, since 2×12146669² = 295083135591122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12146639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6073334 + 6073335.

It is an arithmetic number, because the mean of its divisors is an integer number (6073335).

Almost surely, 2^12146669 is an apocalyptic number.

It is an amenable number.

12146669 is a deficient number, since it is larger than the sum of its proper divisors (1).

12146669 is an equidigital number, since it uses as much as digits as its factorization.

12146669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 35.

The square root of 12146669 is about 3485.2071674436. The cubic root of 12146669 is about 229.8718189360.

The spelling of 12146669 in words is "twelve million, one hundred forty-six thousand, six hundred sixty-nine".