12966783 has 16 divisors (see below), whose sum is σ = 18095616. Its totient is φ = 8250560.

The previous prime is 12966731. The next prime is 12966791. The reversal of 12966783 is 38766921.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12966783 - 2⁹ = 12966271 is a prime.

It is a super-2 number, since 2×12966783² = 336274922738178, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12966703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4660 + ... + 6902.

It is an arithmetic number, because the mean of its divisors is an integer number (1130976).

Almost surely, 2^12966783 is an apocalyptic number.

12966783 is a deficient number, since it is larger than the sum of its proper divisors (5128833).

12966783 is a wasteful number, since it uses less digits than its factorization.

12966783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2334.

The product of its digits is 108864, while the sum is 42.

The square root of 12966783 is about 3600.9419600988. The cubic root of 12966783 is about 234.9330305625.

The spelling of 12966783 in words is "twelve million, nine hundred sixty-six thousand, seven hundred eighty-three".