12689366 has 16 divisors (see below), whose sum is σ = 19731600. Its totient is φ = 6116448.

The previous prime is 12689363. The next prime is 12689381. The reversal of 12689366 is 66398621.

It is a super-2 number, since 2×12689366² = 322040018963912, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12689363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5240 + ... + 7268.

It is an arithmetic number, because the mean of its divisors is an integer number (1233225).

Almost surely, 2^12689366 is an apocalyptic number.

12689366 is a deficient number, since it is larger than the sum of its proper divisors (7042234).

12689366 is a wasteful number, since it uses less digits than its factorization.

12689366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143.

The product of its digits is 93312, while the sum is 41.

The square root of 12689366 is about 3562.2136376136. The cubic root of 12689366 is about 233.2455184290.

The spelling of 12689366 in words is "twelve million, six hundred eighty-nine thousand, three hundred sixty-six".