12960649 has 4 divisors (see below), whose sum is σ = 13957636. Its totient is φ = 11963664.

The previous prime is 12960643. The next prime is 12960653. The reversal of 12960649 is 94606921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 710649 + 12250000 = 843^2 + 3500^2 .

It is a cyclic number.

It is not a de Polignac number, because 12960649 - 2⁵ = 12960617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12960643) 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 3 ways as a sum of consecutive naturals, for example, 498474 + ... + 498499.

It is an arithmetic number, because the mean of its divisors is an integer number (3489409).

Almost surely, 2^12960649 is an apocalyptic number.

It is an amenable number.

12960649 is a deficient number, since it is larger than the sum of its proper divisors (996987).

12960649 is an equidigital number, since it uses as much as digits as its factorization.

12960649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996986.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 12960649 is about 3600.0901377604. The cubic root of 12960649 is about 234.8959793138.

The spelling of 12960649 in words is "twelve million, nine hundred sixty thousand, six hundred forty-nine".