12681071 has 8 divisors (see below), whose sum is σ = 13712160. Its totient is φ = 11657952.

The previous prime is 12681059. The next prime is 12681079. The reversal of 12681071 is 17018621.

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 12681071 - 2⁶ = 12681007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12681071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12681079) 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, 1565 + ... + 5273.

It is an arithmetic number, because the mean of its divisors is an integer number (1714020).

Almost surely, 2^12681071 is an apocalyptic number.

12681071 is a deficient number, since it is larger than the sum of its proper divisors (1031089).

12681071 is a wasteful number, since it uses less digits than its factorization.

12681071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3985.

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 12681071 is about 3561.0491431599. The cubic root of 12681071 is about 233.1946833882.

Adding to 12681071 its reverse (17018621), we get a palindrome (29699692).

The spelling of 12681071 in words is "twelve million, six hundred eighty-one thousand, seventy-one".