12774891 has 8 divisors (see below), whose sum is σ = 17075520. Its totient is φ = 8495432.

The previous prime is 12774889. The next prime is 12774893. The reversal of 12774891 is 19847721.

It is an interprime number because it is at equal distance from previous prime (12774889) and next prime (12774893).

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 12774891 - 2¹ = 12774889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12774893) 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, 3825 + ... + 6338.

It is an arithmetic number, because the mean of its divisors is an integer number (2134440).

Almost surely, 2^12774891 is an apocalyptic number.

12774891 is a deficient number, since it is larger than the sum of its proper divisors (4300629).

12774891 is a wasteful number, since it uses less digits than its factorization.

12774891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10585.

The product of its digits is 28224, while the sum is 39.

The square root of 12774891 is about 3574.1979519887. The cubic root of 12774891 is about 233.7683623464.

The spelling of 12774891 in words is "twelve million, seven hundred seventy-four thousand, eight hundred ninety-one".