12771887 has 8 divisors (see below), whose sum is σ = 13067136. Its totient is φ = 12478752.

The previous prime is 12771883. The next prime is 12771911. The reversal of 12771887 is 78817721.

12771887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12771887 - 2² = 12771883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12771883) 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, 20738 + ... + 21344.

It is an arithmetic number, because the mean of its divisors is an integer number (1633392).

Almost surely, 2^12771887 is an apocalyptic number.

12771887 is a deficient number, since it is larger than the sum of its proper divisors (295249).

12771887 is an equidigital number, since it uses as much as digits as its factorization.

12771887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057.

The product of its digits is 43904, while the sum is 41.

The square root of 12771887 is about 3573.7776931421. Note that the first 3 decimals coincide. The cubic root of 12771887 is about 233.7500374617.

The spelling of 12771887 in words is "twelve million, seven hundred seventy-one thousand, eight hundred eighty-seven".