12855687 has 32 divisors (see below), whose sum is σ = 19407360. Its totient is φ = 7516800.

The previous prime is 12855683. The next prime is 12855697. The reversal of 12855687 is 78655821.

It is not a de Polignac number, because 12855687 - 2² = 12855683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12855683) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85062 + ... + 85212.

It is an arithmetic number, because the mean of its divisors is an integer number (606480).

Almost surely, 2^12855687 is an apocalyptic number.

12855687 is a deficient number, since it is larger than the sum of its proper divisors (6551673).

12855687 is a wasteful number, since it uses less digits than its factorization.

12855687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263.

The product of its digits is 134400, while the sum is 42.

The square root of 12855687 is about 3585.4828126767. The cubic root of 12855687 is about 234.2601569987.

The spelling of 12855687 in words is "twelve million, eight hundred fifty-five thousand, six hundred eighty-seven".