12670649 has 2 divisors, whose sum is σ = 12670650. Its totient is φ = 12670648.

The previous prime is 12670639. The next prime is 12670667. The reversal of 12670649 is 94607621.

12670649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9412624 + 3258025 = 3068^2 + 1805^2 .

It is a cyclic number.

It is not a de Polignac number, because 12670649 - 2²⁰ = 11622073 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12670639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6335324 + 6335325.

It is an arithmetic number, because the mean of its divisors is an integer number (6335325).

Almost surely, 2^12670649 is an apocalyptic number.

It is an amenable number.

12670649 is a deficient number, since it is larger than the sum of its proper divisors (1).

12670649 is an equidigital number, since it uses as much as digits as its factorization.

12670649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 12670649 is about 3559.5855095783. The cubic root of 12670649 is about 233.1307818167.

The spelling of 12670649 in words is "twelve million, six hundred seventy thousand, six hundred forty-nine".