12855747 has 4 divisors (see below), whose sum is σ = 17141000. Its totient is φ = 8570496.

The previous prime is 12855721. The next prime is 12855751. The reversal of 12855747 is 74755821.

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

It is not a de Polignac number, because 12855747 - 2⁶ = 12855683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12855707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2142622 + ... + 2142627.

It is an arithmetic number, because the mean of its divisors is an integer number (4285250).

Almost surely, 2^12855747 is an apocalyptic number.

12855747 is a deficient number, since it is larger than the sum of its proper divisors (4285253).

12855747 is an equidigital number, since it uses as much as digits as its factorization.

12855747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4285252.

The product of its digits is 78400, while the sum is 39.

The square root of 12855747 is about 3585.4911797409. The cubic root of 12855747 is about 234.2605214441.

The spelling of 12855747 in words is "twelve million, eight hundred fifty-five thousand, seven hundred forty-seven".