12727081 has 4 divisors (see below), whose sum is σ = 13137664. Its totient is φ = 12316500.

The previous prime is 12727069. The next prime is 12727087. The reversal of 12727081 is 18072721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12727081 - 2¹⁷ = 12596009 is a prime.

It is a super-2 number, since 2×12727081² = 323957181561122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12727087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205245 + ... + 205306.

It is an arithmetic number, because the mean of its divisors is an integer number (3284416).

Almost surely, 2^12727081 is an apocalyptic number.

It is an amenable number.

12727081 is a deficient number, since it is larger than the sum of its proper divisors (410583).

12727081 is an equidigital number, since it uses as much as digits as its factorization.

12727081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410582.

The product of its (nonzero) digits is 1568, while the sum is 28.

The square root of 12727081 is about 3567.5034688140. The cubic root of 12727081 is about 233.4763719334.

The spelling of 12727081 in words is "twelve million, seven hundred twenty-seven thousand, eighty-one".