12732681 has 8 divisors (see below), whose sum is σ = 18282880. Its totient is φ = 7835472.

The previous prime is 12732647. The next prime is 12732689. The reversal of 12732681 is 18623721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12732681 - 2⁷ = 12732553 is a prime.

It is a super-2 number, since 2×12732681² = 324242330895522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12732689) 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, 163201 + ... + 163278.

It is an arithmetic number, because the mean of its divisors is an integer number (2285360).

Almost surely, 2^12732681 is an apocalyptic number.

It is an amenable number.

12732681 is a deficient number, since it is larger than the sum of its proper divisors (5550199).

12732681 is a wasteful number, since it uses less digits than its factorization.

12732681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326495.

The product of its digits is 4032, while the sum is 30.

The square root of 12732681 is about 3568.2882450833. The cubic root of 12732681 is about 233.5106106292.

The spelling of 12732681 in words is "twelve million, seven hundred thirty-two thousand, six hundred eighty-one".