12676781 has 16 divisors (see below), whose sum is σ = 15220800. Its totient is φ = 10430208.

The previous prime is 12676777. The next prime is 12676789. The reversal of 12676781 is 18767621.

It is a cyclic number.

It is not a de Polignac number, because 12676781 - 2² = 12676777 is a prime.

It is a super-2 number, since 2×12676781² = 321401553043922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12676789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2690 + ... + 5708.

It is an arithmetic number, because the mean of its divisors is an integer number (951300).

Almost surely, 2^12676781 is an apocalyptic number.

It is an amenable number.

12676781 is a deficient number, since it is larger than the sum of its proper divisors (2544019).

12676781 is a wasteful number, since it uses less digits than its factorization.

12676781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3068.

The product of its digits is 28224, while the sum is 38.

The square root of 12676781 is about 3560.4467416323. The cubic root of 12676781 is about 233.1683838739.

The spelling of 12676781 in words is "twelve million, six hundred seventy-six thousand, seven hundred eighty-one".