12766369 has 16 divisors (see below), whose sum is σ = 16350336. Its totient is φ = 9676800.

The previous prime is 12766367. The next prime is 12766373. The reversal of 12766369 is 96366721.

It is not a de Polignac number, because 12766369 - 2¹ = 12766367 is a prime.

It is a super-2 number, since 2×12766369² = 325960354888322, which contains 22 as substring.

It is a Duffinian number.

Its product of digits (81648) is a multiple of the sum of its prime divisors (4536).

It is not an unprimeable number, because it can be changed into a prime (12766367) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 609 + ... + 5089.

It is an arithmetic number, because the mean of its divisors is an integer number (1021896).

Almost surely, 2^12766369 is an apocalyptic number.

It is an amenable number.

12766369 is a deficient number, since it is larger than the sum of its proper divisors (3583967).

12766369 is a wasteful number, since it uses less digits than its factorization.

12766369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4536.

The product of its digits is 81648, while the sum is 40.

The square root of 12766369 is about 3573.0055975327. The cubic root of 12766369 is about 233.7163692835.

Subtracting from 12766369 its sum of digits (40), we obtain a square (12766329 = 3573²).

The spelling of 12766369 in words is "twelve million, seven hundred sixty-six thousand, three hundred sixty-nine".