12709667 has 2 divisors, whose sum is σ = 12709668. Its totient is φ = 12709666.

The previous prime is 12709663. The next prime is 12709673. The reversal of 12709667 is 76690721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12709667 - 2² = 12709663 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12709667.

It is not a weakly prime, because it can be changed into another prime (12709661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6354833 + 6354834.

It is an arithmetic number, because the mean of its divisors is an integer number (6354834).

Almost surely, 2^12709667 is an apocalyptic number.

12709667 is a deficient number, since it is larger than the sum of its proper divisors (1).

12709667 is an equidigital number, since it uses as much as digits as its factorization.

12709667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 12709667 is about 3565.0619910459. The cubic root of 12709667 is about 233.3698375994.

It can be divided in two parts, 12709 and 667, that multiplied together give a triangular number (8476903 = T₄₁₁₇).

The spelling of 12709667 in words is "twelve million, seven hundred nine thousand, six hundred sixty-seven".