12684771 has 24 divisors (see below), whose sum is σ = 21166704. Its totient is φ = 7234560.

The previous prime is 12684731. The next prime is 12684773. The reversal of 12684771 is 17748621.

12684771 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12684771 - 2⁷ = 12684643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12684773) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2086 + ... + 5451.

It is an arithmetic number, because the mean of its divisors is an integer number (881946).

Almost surely, 2^12684771 is an apocalyptic number.

12684771 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12684771 is a deficient number, since it is larger than the sum of its proper divisors (8481933).

12684771 is a wasteful number, since it uses less digits than its factorization.

12684771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7571 (or 7568 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 12684771 is about 3561.5686150908. The cubic root of 12684771 is about 233.2173611895.

The spelling of 12684771 in words is "twelve million, six hundred eighty-four thousand, seven hundred seventy-one".