12880669 has 8 divisors (see below), whose sum is σ = 13365720. Its totient is φ = 12398400.

The previous prime is 12880657. The next prime is 12880691. The reversal of 12880669 is 96608821.

It can be written as a sum of positive squares in 4 ways, for example, as 700569 + 12180100 = 837^2 + 3490^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12880669 - 2¹⁹ = 12356381 is a prime.

It is a super-2 number, since 2×12880669² = 331823267775122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12880649) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 15279 + ... + 16099.

It is an arithmetic number, because the mean of its divisors is an integer number (1670715).

Almost surely, 2^12880669 is an apocalyptic number.

It is an amenable number.

12880669 is a deficient number, since it is larger than the sum of its proper divisors (485051).

12880669 is an equidigital number, since it uses as much as digits as its factorization.

12880669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1391.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 12880669 is about 3588.9648925561. The cubic root of 12880669 is about 234.4118019603.

The spelling of 12880669 in words is "twelve million, eight hundred eighty thousand, six hundred sixty-nine".