12737649 has 8 divisors (see below), whose sum is σ = 17304192. Its totient is φ = 8331440.

The previous prime is 12737639. The next prime is 12737663. The reversal of 12737649 is 94673721.

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 12737649 - 2⁷ = 12737521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12737609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39897 + ... + 40214.

It is an arithmetic number, because the mean of its divisors is an integer number (2163024).

Almost surely, 2^12737649 is an apocalyptic number.

It is an amenable number.

12737649 is a deficient number, since it is larger than the sum of its proper divisors (4566543).

12737649 is an equidigital number, since it uses as much as digits as its factorization.

12737649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80167.

The product of its digits is 63504, while the sum is 39.

The square root of 12737649 is about 3568.9843092959. The cubic root of 12737649 is about 233.5409768411.

The spelling of 12737649 in words is "twelve million, seven hundred thirty-seven thousand, six hundred forty-nine".