12736851 has 4 divisors (see below), whose sum is σ = 16982472. Its totient is φ = 8491232.

The previous prime is 12736847. The next prime is 12736873. The reversal of 12736851 is 15863721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12736851 - 2² = 12736847 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12736811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2122806 + ... + 2122811.

It is an arithmetic number, because the mean of its divisors is an integer number (4245618).

Almost surely, 2^12736851 is an apocalyptic number.

12736851 is a deficient number, since it is larger than the sum of its proper divisors (4245621).

12736851 is an equidigital number, since it uses as much as digits as its factorization.

12736851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4245620.

The product of its digits is 10080, while the sum is 33.

The square root of 12736851 is about 3568.8725110320. The cubic root of 12736851 is about 233.5360997090.

The spelling of 12736851 in words is "twelve million, seven hundred thirty-six thousand, eight hundred fifty-one".