12681069 has 4 divisors (see below), whose sum is σ = 16908096. Its totient is φ = 8454044.

The previous prime is 12681059. The next prime is 12681079. The reversal of 12681069 is 96018621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96018621 = 3 ⋅32006207.

It is an interprime number because it is at equal distance from previous prime (12681059) and next prime (12681079).

It is a cyclic number.

It is not a de Polignac number, because 12681069 - 2⁹ = 12680557 is a prime.

It is a super-2 number, since 2×12681069² = 321619021965522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12681059) 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, 2113509 + ... + 2113514.

It is an arithmetic number, because the mean of its divisors is an integer number (4227024).

Almost surely, 2^12681069 is an apocalyptic number.

It is an amenable number.

12681069 is a deficient number, since it is larger than the sum of its proper divisors (4227027).

12681069 is an equidigital number, since it uses as much as digits as its factorization.

12681069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4227026.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 12681069 is about 3561.0488623438. The cubic root of 12681069 is about 233.1946711287.

The spelling of 12681069 in words is "twelve million, six hundred eighty-one thousand, sixty-nine".