12727649 has 4 divisors (see below), whose sum is σ = 13884720. Its totient is φ = 11570580.

The previous prime is 12727643. The next prime is 12727651. The reversal of 12727649 is 94672721.

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 a de Polignac number, because none of the positive numbers 2^k-12727649 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12727643) 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, 578519 + ... + 578540.

It is an arithmetic number, because the mean of its divisors is an integer number (3471180).

Almost surely, 2^12727649 is an apocalyptic number.

It is an amenable number.

12727649 is a deficient number, since it is larger than the sum of its proper divisors (1157071).

12727649 is a wasteful number, since it uses less digits than its factorization.

12727649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157070.

The product of its digits is 42336, while the sum is 38.

The square root of 12727649 is about 3567.5830754167. The cubic root of 12727649 is about 233.4798451730.

The spelling of 12727649 in words is "twelve million, seven hundred twenty-seven thousand, six hundred forty-nine".